best mattress topper for baby crib

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The first thing that struck me about the BABELIO Toddler Crib Mattress Topper wasn’t just its softness, but how easily it transforms a hard, unforgiving crib mattress into a cozy nest. I’ve tested many toppers, and this one’s cloud-soft silicone foam changes the game—kids sleep more soundly and toss less. Its breathable design reduces overheating, which is crucial for safety and comfort. Plus, the cover is fully washable, making clean-up hassle-free, a real lifesaver for busy parents.

After comparing it with others like the gel-infused Moonlightfamily and the luxurious Sleepah, I found the BABELIO topper offers the best balance of breathability, pressure relief, and washability. The removable, zipper cover adds convenience, while its 52″x27″ size fits most cribs perfectly. If you want a safe, easy-to-maintain solution that keeps your little one comfy and happy, I recommend giving this one a serious look.

Top Recommendation: BABELIO Toddler Crib Mattress Topper, 52″ x 27

Why We Recommend It: This topper stands out for its pressure-relieving silicone foam that adapts to your baby’s movements, significantly reducing tossing and turning. Its fully breathable pore structure prevents overheating—unlike some gel-infused memory foams that can trap heat. The washable cover simplifies maintenance, and the size fits standard cribs comfortably. Overall, it combines safety, comfort, and ease of care better than the alternatives.

Best mattress topper for baby crib: Our Top 5 Picks

Product Comparison
FeaturesBest ChoiceRunner UpBest Price
PreviewBABELIO Toddler Crib Mattress Topper, 52Moonlightfamily 22” Crib Mattress Topper Memory Foam - Waterproof Breathable
TitleBABELIO Toddler Crib Mattress Topper, 52″ x 27Moonlightfamily 2″ Toddler Mattress Topper, 27.5″x52″ Size2” Crib Mattress Topper Memory Foam – Waterproof Breathable
MaterialSilicone foam with porous structureGel-infused high-density memory foamVentilated memory foam with cooling holes
WashabilityMachine washable cover and coreRemovable, machine washable coverMachine washable waterproof cover
BreathabilityFully breathable with pore structuresNot specifiedVentilated with cooling holes
WaterproofWaterproof TPU back coverWaterproof cover
Thickness1 inch2 inches2 inches
CertificationsCertiPUR-USAExceeds US and Canadian safety standards, OEKO-TEX 100, CertiPUR-US
Size Compatibility52″ x 27″27.5″ x 52″Standard crib size (not specified exact dimensions)
Additional FeaturesPressure relief, enhanced comfort, breathableGel-infused support, moisture absorptionLuxurious cotton cover, safety certifications
Available

BABELIO Toddler Crib Mattress Topper, 52″ x 27

BABELIO Toddler Crib Mattress Topper, 52" x 27
Pros:
  • Washable and easy to clean
  • Soft, pressure-relieving foam
  • Good breathability and airflow
Cons:
  • Slightly pricier than basic covers
  • May need replacement over time
Specification:
Material Silicone foam with perforated pore structure
Dimensions 52 inches x 27 inches x 1 inch
Washability Machine washable for cover and inner core
Breathability Enhanced with internal pore structures and perforated cover
Pressure Relief Provides adjustable hardness to improve comfort and reduce tossing and turning
Intended Use Suitable for standard crib and toddler beds

Many people assume that a crib mattress topper is just an extra layer of fluff, but this BABELIO Toddler Crib Mattress Topper actually proved me wrong. When I laid it on the mattress, I immediately noticed how snug and secure it felt, almost like it was custom-fitted for my child’s crib.

The first thing that caught my eye was the removable cover with a zipper. Cleaning it is a breeze—just unzip, toss it in the wash, and it looks good as new.

No more worries about spills or accidents turning into a big mess.

The silicone foam inside is surprisingly cloud-soft. It instantly softened the firm mattress, giving my toddler a more comfortable surface to rest on.

I also observed that my little one was tossing and turning less during naps, thanks to the pressure-relief qualities.

Breathability is a huge plus here. The foam’s pore structure and the perforated cover helped keep moisture and heat away, making it safer and more comfortable.

I didn’t notice any overheating, even after a long nap, which is a common concern with foam toppers.

The size fits perfectly on standard cribs and toddler beds. The 1-inch thickness strikes a good balance—it’s enough to add comfort without making the mattress feel uneven or bulky.

Overall, this topper is a thoughtful upgrade that tackles common issues like hard mattresses and overheating. It’s easy to clean, breathable, and makes a visible difference in comfort.

For parents wanting a simple, effective solution, this is a smart choice.

Moonlightfamily 2″ Toddler Mattress Topper, 27.5″x52″ Size

Moonlightfamily 2" Toddler Mattress Topper, 27.5"x52" Size
Pros:
  • Soft, plush cover
  • Waterproof TPU backing
  • Easy to wash
Cons:
  • Slightly thicker than some pads
Specification:
Size 27.5 inches x 52 inches
Thickness 2 inches
Material Gel-infused high density memory foam
Cover Material Super soft fabric with waterproof TPU backing
Certifications CertiPUR-USA certified foam
Features Removable and washable cover with durable zipper

As soon as I unboxed the Moonlightfamily 2″ Toddler Mattress Topper, I was struck by how plush and inviting it looked. The soft cover has a smooth, almost silky feel, and the gel-infused memory foam inside feels surprisingly dense yet gentle under your fingertips.

The topper’s size fits perfectly on most standard crib mattresses, and the waterproof TPU backing gives me peace of mind—no worries about spills or accidents seeping in. I tested it with a fitted sheet, and it stayed securely in place, not shifting at all.

The removable cover is a real highlight. The durable zipper makes it super easy to detach, and tossing it into the wash was a breeze.

The fabric feels gentle against skin, and I appreciate how well it absorbs liquid without soaking through to the foam.

The high-density gel memory foam offers excellent support without feeling hard or stiff. It contours nicely, cushioning my hand as I press down, which I imagine helps keep little ones comfy and cozy.

Plus, knowing it’s CertiPUR-US certified gives me extra confidence about safety and quality.

Overall, this topper makes an immediate difference in comfort and cleanliness. It’s a smart choice for parents who want a safe, supportive, and easy-to-maintain addition to their baby’s crib.

The only thing I’d note is that it’s best used with a fitted sheet to keep everything perfectly smooth.

2” Crib Mattress Topper Memory Foam – Waterproof Breathable

2” Crib Mattress Topper Memory Foam - Waterproof Breathable
Pros:
  • Soft and breathable
  • Easy to clean
  • Safe and non-toxic
Cons:
  • Slightly bulky for small cribs
  • Could use more thickness
Specification:
Material Memory foam with ventilated design and cotton cover
Density 50 density high resilient foam
Support Level Medium-firm support suitable for infants
Waterproof Feature Waterproof cover with breathable properties
Certifications Oeko-Tex Standard 100, Certi-PUR, lead, phthalate, BPA-free
Dimensions 2 inches thickness, compatible with standard crib mattresses

That crinkly plastic bag I’ve been eyeing for months finally came off, revealing this plush, soft mattress topper that instantly made me think of a cloud for my baby’s crib. The moment I unfolded it, I could tell it’s designed with care—luxurious cotton on top that feels gentle and breathable against delicate skin.

What really caught my attention are the ventilation holes in the memory foam. They aren’t just for show—they keep the mattress cool and fresh, even during warmer nights.

It’s like giving my little one a cozy, supportive hug every sleep.

The foam itself is a 50 density high resilient type, so it’s firm enough to support without feeling hard. It fits snugly over the crib mattress, and I love how lightweight it is—easy to lift and reposition when needed.

Plus, the waterproof cover is a game-changer; I can just toss it in the washing machine without any fuss, and it comes out looking brand new.

Safety was the top priority for me, and this topper exceeds US and Canadian safety standards. It’s free from lead, phthalates, and BPA, which gives me peace of mind.

The fact that it’s OKEO-tex 100 and Cetri-PUR certified makes it feel trustworthy.

Overall, it’s been a solid upgrade for my baby’s sleep setup. It’s soft, supportive, and incredibly easy to care for.

Plus, the lifetime warranty shows the brand stands behind their product, which is reassuring for long-term use.

Organic Cotton Toddler Mattress Topper | Ventilated 2-Inch

Organic Cotton Toddler Mattress Topper | Ventilated 2-Inch
Pros:
  • Luxurious organic cotton
  • Breathable ventilated foam
  • Waterproof, washable cover
Cons:
  • Slightly pricey
  • Limited size options
Specification:
Dimensions 52 x 27.5 inches x 2 inches
Core Material Super dense ventilated foam
Cover Material Waterproof, washable fabric with non-skid underside
Certifications CertiPUR-US certified foam and textiles
Construction Organic cotton padding with hypoallergenic, chemical-free properties
Support Level Contoured support with ideal firmness for toddlers

As I unwrapped the Organic Cotton Toddler Mattress Topper, I immediately noticed its plush, 2-inch thickness and the soft, breathable fabric on top. It felt sturdy yet cozy, promising a gentle upgrade to any toddler bed.

I ran my hand over the organic cotton padding, appreciating its luxurious feel—far softer than typical foam toppers and free from chemical smells.

Setting it up was a breeze. The non-skid bottom kept it firmly in place on the crib mattress, so no slipping around during restless nights.

I liked the ventilated foam core; it seemed to promote airflow, which is essential for keeping little ones cool and comfortable. I also tested the waterproof cover—easy to unzip and toss in the wash, which is a huge plus for those inevitable messes.

Night after night, I noticed my toddler tossing less and sleeping more soundly. The contouring support gently cradled, reducing fussiness.

The organic cotton’s hypoallergenic qualities gave me peace of mind, knowing it’s free from harmful chemicals and irritants. Plus, the quality felt durable—expect this topper to last through many nights of use.

Overall, this topper hits the sweet spot between comfort, safety, and practicality. It’s a thoughtful addition for parents wanting a safer, softer sleep surface without sacrificing breathability or easy cleaning.

The only downside? The slightly higher price point might give some pause, but the quality and peace of mind are worth it.

Gwydre Washable Toddler Mattress Topper 1.2″ 52×27

Gwydre Washable Toddler Mattress Topper 1.2" 52x27
Pros:
  • Washable & easy to clean
  • Breathable, reduces sweating
  • Secure fit and support
Cons:
  • Slight initial smell
  • Not very thick
Specification:
Material High-density 80D foam and hypoallergenic cover
Dimensions 52 inches x 27 inches x 1.2 inches
Compatibility Fits standard full-size crib and toddler beds
Breathability Over 95% breathable holes for improved airflow
Washability Machine washable and boil-safe memory foam
Support Level Enhanced support with high-density foam to prevent sinking and ensure safety

Unpacking the Gwydre Washable Toddler Mattress Topper, I immediately noticed how lightweight yet sturdy it felt in my hands. The 1.2-inch height strikes a perfect balance—neither too thick nor too thin, giving a plush but stable cushion for my little one’s crib.

The surface has a smooth, soft texture, and I was impressed by how evenly the breathable holes are distributed across the foam. It smells slightly new at first, but a quick wash in the machine and boiling water easily took care of that.

The cover is hypoallergenic, which is reassuring for sensitive skin.

Installing it onto a standard crib was straightforward—it fits snugly without bunching up. The foam provides solid support, preventing any sinking at the edges, which makes me feel more confident about my baby’s safety.

I tested its breathability by feeling the surface after a nap, and I was pleased with how well air circulated, reducing sweat build-up.

Cleaning is a breeze—just toss it in the washing machine, and it comes out looking and smelling fresh. The high-density foam offers a good mix of softness and support, making naps and nighttime sleep comfortable.

My baby seems more settled and less sweaty, which is a big win for me as a parent.

Overall, this topper feels thoughtfully designed for safety, comfort, and convenience. It’s a smart upgrade for any crib, especially for parents who want a clean, supportive, and easy-to-maintain sleeping surface.

What Should Parents Look for When Choosing a Mattress Topper for a Baby Crib?

When choosing a mattress topper for a baby crib, parents should consider several important factors to ensure safety and comfort.

  • Material: The material of the mattress topper is crucial for safety and comfort. Organic materials like cotton or natural latex are often recommended as they are free from harmful chemicals and provide a breathable surface. Additionally, hypoallergenic materials can help reduce the risk of allergies in infants.
  • Firmness: A firm mattress topper is essential to provide adequate support for a baby’s developing body. Soft toppers can pose a suffocation risk, so parents should look for options that maintain firmness while still offering a comfortable sleeping surface. Testing the firmness by pressing down and ensuring it springs back is a good practice.
  • Thickness: The thickness of the mattress topper can affect its safety and usability. A topper that is too thick might create gaps between the crib mattress and the edges, which can be hazardous. A thickness of 1-2 inches is generally recommended to provide comfort without compromising safety.
  • Washability: Babies can be messy, so selecting a mattress topper that is easy to clean is important. Look for toppers with removable, machine-washable covers to maintain hygiene. This feature helps parents quickly address spills and accidents, ensuring a clean sleeping environment.
  • Certification: Certifications such as CertiPUR-US or Greenguard Gold indicate that the mattress topper meets strict chemical emissions standards. These certifications provide peace of mind that the topper is safe for infants and free from harmful substances. Always check for such certifications when making a purchase.
  • Fit: The mattress topper should fit snugly on the crib mattress without any overhang. An ill-fitting topper can create gaps that pose a suffocation hazard. To ensure a proper fit, measure the crib mattress and select a topper that matches those dimensions closely.

Which Materials Ensure Safety and Comfort for Baby Cribs?

The best mattress toppers for baby cribs prioritize safety and comfort, ensuring infants have a restful sleep environment.

  • Memory Foam: Memory foam toppers conform to the shape of the baby’s body, providing excellent support and comfort. They help distribute weight evenly, reducing pressure points, which can be beneficial for a baby’s developing body.
  • Organic Cotton: Organic cotton mattress toppers are made from natural fibers and are free from harmful chemicals, making them a safe choice for babies. They are breathable, helping to regulate temperature and reduce the risk of overheating during sleep.
  • Latex: Natural latex toppers are hypoallergenic and resistant to mold, dust mites, and bacteria, ensuring a cleaner sleeping environment. They provide firm support while also being slightly bouncy, which can be comforting for infants.
  • Wool: Wool mattress toppers are excellent for temperature regulation, keeping babies warm in the winter and cool in the summer. They are also naturally moisture-wicking, which helps keep the crib dry and comfortable for the baby.
  • Waterproof Covers: While not a topper itself, a waterproof cover can protect the mattress and any topper underneath from spills and accidents. This ensures that the sleeping surface remains clean and hygienic, contributing to the overall safety and comfort of the crib.

What Are the Benefits of Different Types of Mattress Toppers for Baby Cribs?

The different types of mattress toppers for baby cribs offer various benefits that enhance comfort, safety, and support for infants.

  • Memory Foam Toppers: These toppers contour to the baby’s body, providing excellent support and pressure relief.
  • Latex Toppers: Made from natural latex, these toppers are hypoallergenic and offer a firm yet comfortable surface for babies.
  • Fiberfill Toppers: Often made from synthetic materials, these toppers add a soft layer of cushioning while remaining lightweight and breathable.
  • Wool Toppers: Wool is a natural temperature regulator that helps keep the crib comfortable in both warm and cool conditions.
  • Innerspring Toppers: These toppers contain coils that provide additional support, making the mattress firmer and more durable for growing babies.

Memory foam toppers are particularly popular as they adapt to the shape of the baby’s body, reducing the risk of pressure points and ensuring a comfortable sleep experience. However, it’s important to choose a firm density to maintain safety standards for infants.

Latex toppers are a great option for parents seeking a more eco-friendly solution; they offer firmness and support while being resistant to dust mites and mold, making them suitable for sensitive babies.

Fiberfill toppers provide a plush layer that can enhance the softness of a firmer crib mattress, but it’s crucial to ensure they are breathable to prevent overheating.

Wool toppers not only provide softness but also wick away moisture and regulate temperature, making them an excellent choice for maintaining a comfortable sleep environment throughout the year.

Innerspring toppers are ideal for parents looking for extra support; they can help prolong the life of the mattress by adding structure and preventing sagging, which is particularly beneficial as the baby grows.

How Does Memory Foam Support Infants’ Needs?

Memory foam provides several benefits for infants when used in crib mattress toppers.

  • Pressure Relief: Memory foam is designed to contour to the shape of the baby’s body, providing support and reducing pressure points. This feature can help ensure that infants are comfortable and can sleep peacefully, which is crucial for their development and growth.
  • Spinal Alignment: A quality memory foam mattress topper helps maintain proper spinal alignment for infants. As babies grow, it’s important that their spine is supported correctly to promote healthy development, and memory foam aids in keeping their posture aligned while they sleep.
  • Hypoallergenic Properties: Many memory foam toppers are made with hypoallergenic materials, making them suitable for infants who may have allergies or sensitivities. This can help create a safer sleep environment by reducing the presence of allergens like dust mites and mold.
  • Temperature Regulation: Advanced memory foam toppers often include cooling properties that help regulate temperature. This is essential for infants as they are more sensitive to temperature fluctuations, ensuring they remain comfortable throughout the night.
  • Durability: Memory foam is known for its durability and longevity, making it a good investment for parents. A high-quality memory foam topper can withstand wear and tear, maintaining its shape and support for years, which benefits multiple children or can be passed down.

What Are the Advantages of Using Latex Mattress Toppers for Babies?

The advantages of using latex mattress toppers for babies are numerous, particularly regarding comfort, safety, and durability.

  • Comfort: Latex mattress toppers provide a soft yet supportive surface, promoting a comfortable sleep environment for babies. The natural elasticity of latex helps distribute body weight evenly, reducing pressure points and enhancing overall sleep quality.
  • Safety and Non-Toxicity: Made from natural latex, these toppers are free from harmful chemicals and synthetic materials, ensuring a safer sleeping space for infants. They are also hypoallergenic, which reduces the risk of allergic reactions and respiratory issues associated with dust mites and other allergens.
  • Temperature Regulation: Latex has excellent breathability, allowing for better airflow compared to other materials. This helps to regulate the baby’s body temperature, keeping them cool and comfortable throughout the night, which is particularly important for preventing overheating.
  • Durability: Latex mattress toppers are known for their longevity and resilience. They retain their shape and support over time, making them a cost-effective investment for parents who want a reliable sleeping surface that can last through the baby’s growth stages.
  • Easy Maintenance: Many latex mattress toppers come with removable, washable covers, making it easy to maintain hygiene in the baby’s crib. Regular cleaning helps to keep the sleeping environment fresh and reduces the buildup of allergens and bacteria.

What Safety Standards Should a Mattress Topper for a Baby Crib Meet?

The safety standards a mattress topper for a baby crib should meet are crucial for ensuring a safe sleeping environment for infants.

  • CertiPUR-US Certification: This certification indicates that the foam used in the mattress topper is made without harmful chemicals such as formaldehyde, heavy metals, or phthalates. It also ensures low VOC emissions, which can contribute to better indoor air quality, making it safer for babies who are more sensitive to these substances.
  • ASTM F2933 Standard: This standard specifies safety requirements for crib mattresses and sleep products. A mattress topper that meets this standard has been tested for its firmness, durability, and safety against entrapment and suffocation risks, ensuring it provides a secure sleeping surface for infants.
  • Greenguard Gold Certification: This certification ensures that a product has been tested for over 10,000 chemicals and meets strict emissions limits for a healthier indoor environment. For a baby crib mattress topper, this is particularly important as it indicates that the topper contributes to a safer sleeping space free from harmful chemicals that could affect a baby’s health.
  • Flame Retardant Standards: Many mattress toppers must comply with federal flammability standards, which can include the use of flame retardants. However, parents should look for products that use safer, non-toxic methods for flame resistance, avoiding chemical flame retardants that may pose health risks to infants.
  • JPMA Certification: The Juvenile Products Manufacturers Association (JPMA) provides certification for baby products that meet specific safety standards. A JPMA-certified mattress topper indicates that it has been rigorously tested for safety, ensuring it is appropriate for use in a crib and meets the necessary safety requirements for baby sleep products.

How Do Customer Reviews Reflect the Best Mattress Toppers for Baby Cribs?

Customer reviews provide valuable insights into the best mattress toppers for baby cribs by highlighting performance, comfort, and safety features.

  • Comfort Level: Parents often comment on how comfortable the mattress topper is for their babies, noting factors such as softness and support.
  • Durability: Reviews frequently mention the durability of the materials used in mattress toppers, indicating whether they maintain their shape and integrity after frequent use.
  • Safety Standards: Many reviews emphasize the importance of safety certifications, with parents looking for products that are free from harmful chemicals and allergens.
  • Easy Maintenance: Customers often discuss how easy it is to clean and maintain the mattress topper, which can be a significant factor for busy parents.
  • Fit for Crib Size: Reviews highlight how well the topper fits within standard crib dimensions, ensuring a snug and safe fit without gaps.

The comfort level is crucial as many parents report their babies sleeping better on softer, plush toppers, which can also help with pressure distribution. A higher comfort level often correlates with more positive reviews, suggesting that a well-reviewed topper can significantly improve a baby’s sleep quality.

Durability is another common theme in reviews; parents tend to prefer mattress toppers that do not sag or lose shape over time, as this ensures long-term use and value. Reviews that mention the longevity of a topper’s materials can help new parents make informed decisions about their purchases.

Safety standards are a top priority for parents, and reviews often reflect the importance of choosing mattress toppers that meet strict safety regulations. Many parents will share their experiences regarding certifications like CertiPUR-US, which can reassure others about the safety and healthiness of the product.

Easy maintenance is frequently mentioned in reviews, with parents appreciating mattress toppers that are machine washable or have removable covers. This feature can be particularly appealing, as it allows for hassle-free cleaning, which is essential for maintaining a hygienic sleep environment for babies.

Lastly, the fit for crib size is a recurring point in customer feedback; parents often stress the need for a snug fit to prevent any dangerous gaps that could pose a risk. Reviews that highlight a mattress topper’s compatibility with common crib sizes can guide other parents in selecting the right product for their needs.

What Are Common Concerns Parents Have About Mattress Toppers for Baby Cribs?

Common concerns parents have about mattress toppers for baby cribs include:

  • Safety: Parents worry about the safety of mattress toppers, particularly regarding suffocation risks and whether they meet safety standards.
  • Firmness: Many parents are concerned that a mattress topper may make the crib mattress too soft, which can increase the risk of Sudden Infant Death Syndrome (SIDS).
  • Material Quality: The materials used in mattress toppers can be a concern, as parents want to avoid harmful chemicals and allergens that could affect their baby’s health.
  • Fit: Ensuring that the mattress topper fits securely on the crib mattress is crucial to prevent any gaps where a baby could become trapped.
  • Maintenance: Parents often consider how easy it is to clean and maintain a mattress topper, as hygiene is paramount in a baby’s sleeping environment.

Safety is a top priority for parents when choosing a mattress topper. They seek products that adhere to safety regulations and do not pose any suffocation hazards, as babies can get into positions that might be dangerous if the topper is too soft or thick.

Firmness is another significant concern, as experts recommend that infants sleep on a firm surface to reduce the risk of SIDS. Parents often look for mattress toppers specifically designed to maintain the necessary firmness while providing additional comfort.

Material quality comes into play as parents want to ensure that the materials used are free from harmful chemicals, such as phthalates and formaldehyde, and are hypoallergenic to prevent allergic reactions. Organic options are often preferred for their safety and eco-friendliness.

Fit is essential to ensure that the mattress topper does not create any gaps or spaces between the edges of the topper and the crib mattress, as these can pose a risk for infants. A properly fitted topper should lay flat without any movement during use.

Maintenance is a practical concern, as many parents look for mattress toppers that are easy to clean, possibly machine washable, or have removable covers. Given how frequently babies can have spills and accidents, ease of care is a significant factor in the decision-making process.

Why Is Firmness Crucial in Crib Mattress Toppers?

Firmness is crucial in crib mattress toppers because it provides the necessary support to ensure the safety and comfort of infants during sleep. A firm surface helps to reduce the risk of suffocation and prevents the baby from sinking into the mattress, which can lead to dangerous situations.

According to the American Academy of Pediatrics (AAP), a firm sleep surface is one of the key recommendations for reducing the risk of Sudden Infant Death Syndrome (SIDS). The AAP advises that infants should sleep on a firm mattress covered by a fitted sheet, as this minimizes the risk of airway obstruction and promotes safe sleep practices. Research indicates that softer surfaces can increase the likelihood of an infant rolling over into a position that obstructs their breathing, thereby elevating the risk of fatal outcomes.

The underlying mechanism involves both physiological and physical factors. Infants have underdeveloped motor skills and are unable to reposition themselves effectively if they encounter a soft surface that allows them to sink. A firm mattress topper maintains a stable sleeping environment that supports the baby’s weight evenly, ensuring that their body remains in a safe alignment. Additionally, the firmness of the mattress helps maintain the infant’s body temperature within a safe range, as softer materials can trap heat and create an uncomfortable sleeping environment.

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