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A child in bear-print pajamas hugs a star pillow while lying on the Newton Baby Kids' Twin Mattress. Text below: Temperature regulating for cooler, more comfortable sleep. GREENGUARD Gold certified for peace of mind.
A handheld shower head sprays water onto the core of a Newton Baby Kids' Twin Mattress in a bright bathroom. Text below reads: “The first completely washable kids’ mattress—even the core.”.
The Newton Baby Kids' Twin Mattress features a partially unzipped, ultra-breathable white cover that's completely washable. Made in the USA, it’s GREENGUARD Gold certified and trusted by over 2 million families.
The Newton Baby Kids' Twin Mattress, GREENGUARD Gold certified and breathable, measures 76"L x 38"W x 5.5"H and is shown as a white twin-size bed on a light blue background.
The Newton Baby Kids' Twin Mattress is shown with its 3-piece washable core and a rolled cover on a bed frame. GREENGUARD Gold certified, the textured white core and thick, snug cover make cleanups easy and edges smooth.
A young child lies comfortably on a bed with a Newton Baby Kids' Twin Mattress. Text at the bottom reads: GREENGUARD Gold certified, hypoallergenic, and ideal for asthma and allergy sufferers.
A young child in pajamas lies on a white house-shaped bed, watching a tablet. The pastel room features paper flowers, string lights, and a Newton Baby Kids' Twin Mattress that’s GREENGUARD Gold certified for safety.
A young child in patterned pajamas stands on a white metal bed frame with a breathable Kids' Twin Mattress by Newton Baby. The bright room features "Kinsley" on the wall and alphabet art above a toy basket.
A child in cream bear-print pajamas sits on a white Newton Baby Kids' Twin Mattress with a green label, holding a beige book featuring a pinecone, atop a light-colored carpet. The mattress is washable and perfect for kids.
A smiling toddler in printed pajamas lies on a white mattress. Text below reads: The Newton Baby Kids' Twin Mattress is GREENGUARD Gold certified and firm to support healthy growth and spinal alignment.
A smiling toddler in pajamas stands on a Newton Baby Kids' Twin Mattress, holding a plush teddy bear overhead. The softly lit room features minimalist decor and neutral tones.
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Kids' Twin Mattress

21 Reviews

Breathable & Washable

Our ultra-breathable, GREENGUARD Gold certified twin mattress was designed to deliver optimal sleep for kids' unique needs. Newton's breathability allows for cooler, longer, deeper sleep. Engineered with our patented Wovenaire® technology, it provides firm support for growing bones and features a completely washable cover and core for hassle-free cleanup (it comes in 3 pieces for much easier washing). Provide comfort and support for an easy transition with a 5.5” low profile perfect for big-kid beds, trundles, and bunks. Ideal for asthma and allergy sufferers, this mattress ensures clean, comfortable, and worry-free sleep—for your little dreamer and you.

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Frequently Bought Together

  • A green line art icon of two layers and arrows moving upwards indicating breathable material

    Temperature Regulating

    Unsurpassed breathability means your child will enjoy cooler, deeper sleep — all night long.

  • A green line art icon of a washing machine

    Completely Washable

    Washable cover + the ONLY kids’ mattress with a 3-piece washable core. Easy cleanup of messes, dust mites and allergens!

  • A green line art of a baby smiling

    Better Sleep for Big Kids

    Optimal levels of comfort, air circulation and firm support for growing bones.
Baby2Baby

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Your donation will help us provide diapers, safe sleep spaces, and more essential items to children through the non-profit organization Baby2Baby.

Perfect for potty training! Designed to bring clean, hypoallergenic, lasting comfort to the big-kid bed.

Extra plush, ½" thick cushiony cover is fully breathable for a cooler night’s sleep — and is machine washable.

90% air, 10% food-grade polymer and more breathable than leading organic, foam and coil mattresses. Provides optimal firmness for your not-so-little one.

Our mattress is independently tested and certified for low chemical emissions, exceeding the highest industry emissions safety standards to help improve indoor air quality.

Made for growing sleepers with 5.5" low profile - ideal for all big-kid beds, trundles, and bunks!

The Reviews Are In

We're providing peace of mind — for bedtime and beyond.

Sabrina M.

A child relaxes on a luxurious Newton mattress, captivated by the book "The Wonderful Things You Will Be."

“Surpassed all my expectations. Our son doesn't wake up sweating anymore and he seems to fall asleep faster too. ”

Jenna H.

A little girl peacefully lays in her crib, cuddling a soft stuffed animal.

“We were terrified of sleep regression when moving our little to her big girl bed, but it ended up being a breeze. Can't recommend enough!”

Medina S.

A baby lying on a white newton mattress, playfully resting his hands on his face, looking adorable and content.

“I [worried] about three sections, but you can’t notice them at all. My little one loves it! Loved the crib mattress and now love the twin!”

Amanda E.

A baby girl sitting on a newton mattress with a delicate white canopy, smiling and surrounded by soft pillows.

“Love this mattress, wish you sold a king-sized one!”

Marcela R.

A baby crawling on a soft newton mattress, exploring their surroundings with curiosity and delight.

“I’m a grandma and I’m buying one to keep it in my house. The parents loved it, so I’m buying the same one.”

Product Details

Details

  • Ultra-breathable, washable & recyclable Wovenaire® Core arrives in 3 pieces for easy cleaning and assembly
  • Removable, machine washable cover
  • GREENGUARD Gold Certified

Fits all Twin Mattress frames

  • Twin Mattress measures 75” x 38” x 5.5” (LxWXH)
  • Use sheets with an 8" pocket for a snug fit
  • Low profile makes it ideal for bunk beds and trundle beds!

Mattress Includes

  • Breathe-thru outer cover - soft, single-layer eyelet cover made from cushiony spacer material (polyester)
  • Viscose liner (sewn to outer cover) - safe alternative for exceeding rigorous federal flammability standards
  • Wovenaire® core - made of safe, food-grade polymer (same material as a yogurt container!)

https://cdn.shopify.com/s/files/1/0792/0323/files/Twin_Mattress_WHT_-_800x552_TopSlider_11.jpg?v=1730381318

Testing & Certification

GREENGUARD Gold Certified

  • Newton products have been independently tested and certified by UL to meet GREENGUARD Gold standards for the lowest chemical emissions. The standards are among the most rigorous in the world to test for the lowest measurements of chemical emissions such as VOCs, and certifies that Newton products help to promote a healthier indoor air quality. With Newton, you can rest assured your child is sleeping safely.

Shipping & Delivery

  • Ships FREE* in 2-4 business days
  • Ships via FedEx
  • Transit time: 3-7 days once shipped
  • Free Shipping in the contiguous 48 states
  • $111 shipping fee to Canada plus taxes (GTS/HTS calculated at checkout based on zip code)
  • Shipping fee to HI & AK calculated at checkout based on zip code

Return & Exchanges

RETURN / EXCHANGE POLICY

  • Risk-free, Easy Returns with our 100-night trial, money-back guarantee

WARRANTY POLICY

  • Wovenaire® Core - Limited 10-year warranty
  • Mattress Cover - Limited 2-year warranty

Care & Use

Washing the Cover:

  • Zip closed prior to wash & dry
  • Machine wash cold, alone, with detergent
  • To refresh, add ½ cup baking soda to wash
  • Tumble dry low thoroughly on low heat setting
  • Do NOT hang dry
  • Replace If Damaged - Contact Customer Care For Assistance

Washing the core:

  • Hand rinse cold (in shower or tub)
  • Use mild detergent
  • Shake then air or fan dry
  • Avoid heat or direct sun
  • Spot clean as needed

Assembly

https://youtu.be/lo4sqUJOEN8

  • Unroll cover and set top cover aside
  • Lift side walls of bottom cover into a box-shape
  • Fit all 3 core segments inside, making certain that all
    edges (especially the top edges) align flush against each other (no
    bumps or spaces in between)
  • Place top cover over assembled bottom cover and core
  • Zip closed, tucking front flap in between core and side walls

FAQ

Will the Kids' Twin Mattress fit my bed frame?

The mattress is designed to fit all traditional twin bed frames. It measures 38” x 75” x 5.5” ( LxWxH).

Are there flame retardants?

While many of our competitors use toxic chemical fire retardants, we do not. Instead, we use a layer of viscose material sewn into our cover. Viscose material is made from reconstituted wood pulp. We quilt this material into our mattress covers for a safer, non-toxic solution.

Is the mattress comfortable for my child?

Our Kids' Twin Mattress is made with the same technology and comfort that Newton is known for in our crib mattresses. Many parents tell us their little ones start sleeping better from the first night, and we couldn’t be happier. Try it yourself risk-free with our 100-night trial.

Can I lay on this with my child?

We know how bedtime can be during the toddler and preschool years (“Just one more book?”). That said, this mattress is specifically designed for kids up to 100lbs. We don’t recommend that adults sleep on the mattress as it could impact the integrity of our patented Wovenaire® core. So snuggling together on the kids' mattress for one more book at bedtime is fine; however, sleeping for a longer duration on it is not recommended for parents.

What sheets should I use?

We recommend using a cotton sheet for the most comfortable and breathable sleep for your child. Because our mattress is 5.5" thick, it's best to find sheets with an 8" pocket to fit snuggly on the mattress.
A woman and two children are in a cozy room with a bright pink newton mattress, creating a warm and inviting atmosphere with over the image image label of "100 Night Free Tial"

100-Night Free Trial

Try any Newton mattress, bassinet, or travel crib for 100 nights risk-free to decide if it's right for you and your baby. If either of you aren’t happy, simply return at our expense for a full refund.

FREE SHIPPING

FREE RETURNS

Top Kids' Twin Mattress Questions

Our Kids’ Mattress is not waterproof, however, the cover is water resistant and the entire mattress is washable from cover to core! The removable cover can go into the washing machine and the core can be washed in the bathtub or shower! The core comes in 3 sections to make washing only the soiled area even easier.

You can certainly use a mattress pad! We make a breathable, waterproof mattress pad that fits just like a fitted sheet and makes quick changes easy to manage when accidents happen.

Kids are messy and we all know accidents happen! Our unique unique cover-to-core washability ensures that — no matter the mess — your big kid will have the cleanest night’s sleep, guaranteed!

Generally, parents will trade in their little one’s crib for a toddler or twin bed when the child is three years old or older, although there is no specific age at which you have to make the switch.

Some children transition earlier, like if they’ve outgrown their crib or toddler bed before age three, while others will transition later, especially if they’re more petite or their room is short on space.

It’s important to look at your child’s readiness before deciding when to introduce them to a big kid bed. Some kids look forward to this rite of passage, but for others, the transition is a bit scary. Follow your child’s lead.

A kid mattress is larger than a crib mattress, as it’s sized to fit a standard twin bed. It is also more comfort-driven and less firm than a crib mattress because there are not the same safety concerns with an older child.

There’s no exact answer to that, other than a supportive, comfortable, and breathable mattress. Some toddlers will feel most secure in their toddler bed, which uses a crib-sized mattress. Our Waterproof Mattress might be a good choice, especially if your little one is potty training!

If they’ve transitioned to their big-kid bed, then a breathable twin mattress with a washable cover (they may still have some “oopsies”) would be a good bet.

Some parents choose to let their child sleep on a twin mattress as part of a Montessori floor bed, which is made with the mattress close to the floor. These types of beds, also known simply as “floor beds,” don’t have rails to prevent your toddler from getting out of them.

Whatever type of bed and mattress you choose for your toddler, look for the GREENGUARD Gold certification, which indicates the mattress meets stringent requirements for total VOC emissions to maintain healthy indoor air quality.

Newton’s GREENGUARD Gold-certified Kid & Toddler Mattress is the only twin-sized mattress that’s completely washable from cover to core. That means if your little one is potty training, no problem!

It’s also ultra-breathable and hypoallergenic, so your child will not overheat, and if they have allergies or asthma, you don’t have to worry.

Additionally, our low-profile mattress can fit any sort of twin bed, be it a standard twin, bunk, or trundle. It’s also the perfect choice for a Montessori floor bed, whether you use a low bed frame or just put the mattress straight on the floor.

Floor beds make it easy for toddlers to get in and out of bed without restrictions, helping them become independent sleepers more quickly.

Washing your Newton Kid & Toddler Mattress is easy. Just remove the cover and place it in the washing machine with a mild detergent. You could also hand wash it if you prefer.

Hang the cover to dry or pop it in the dryer on low heat. You can wash the mattress core in the shower. Be sure to let everything dry thoroughly before reassembling.

Your toddler can enjoy their Newton Kid & Toddler Mattress for many years, as it’s been tested up to 100 lbs. This being said, it’s no problem if you want to snuggle on occasion or sit on the mattress with them to read a book.

Just keep in mind it’s meant to be a kids' mattress and is designed to support your growing child.

A young child relaxes on a house-shaped bed adorned with colorful pompoms and floral decors in a cozy, pink-themed bedroom.

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