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Waterproof Crib Mattress

2143 Reviews

The Waterproof (52" x 28" x 5.5"), fits all standard-size cribs.

We've got you covered. Ultra-breathable & washable with a waterproof lining on the toddler side, 5.5-inch thickness, and a soft, quilted removable cover.

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Frequently Bought Together

  • 100% Breathable

    Ultra Breathable

    Our innovative Breathe-Thru Technology allows your baby to breathe right through, reducing the risk of suffocation. They’ll rest easy. You can, too.

  • 100% Washable

    Completely Washable

    The only crib mattress that's washable from cover to core. NO foam, glue, latex or springs, so your baby will enjoy a cleaner, hypoallergenic sleep.

  • 100% Better Sleep

    Better Sleep

    The right level of comfort, support and air circulation means your baby will sleep better on a Newton. Happy mornings — and no sweaty backs!


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

Essential | Original | Waterproof | Mini

Designed for longevity through the toddler years.

Plush, dual-layer quilted cloud cover for extra comfort. Unsurpassed breathability with a waterproof TPU barrier added to the toddler side of the cover to help protect during potty training stages. Breathable and machine washable.

A safe alternative for exceeding rigorous federal flammability standards. Fully breathable and machine washable.

90% air, 10% food-grade polymer and much more breathable than leading organic mattresses. Provides just the right firmness for babies and comfort for toddlers — there’s no need to flip the mattress as your baby grows.

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

The Reviews Are In

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


“Breathable, washable, AND recyclable! Talk about peace of mind!”

Verified Buyer, Influencer


“This mattress is every parent’s dream. (Especially new, worried mommas like myself) It’s so breathable—meaning your baby can literally breathe right through it!”

Verified Buyer, Influencer


“Getting baby to sleep is already stressful enough as it is; I like that I can put him down and know that he’s safely resting, giving us all a little bit of much needed peace and quiet!”

Verified Buyer, Influencer


“Our baby sleeps through the night because of Newton!”

Verified Buyer, Influencer

Product Details


  • Fully breathable, waterproof, washable and recyclable
  • Wovenaire® core is 90% air by volume and 10% is made of safe, food grade polymer
  • 3D quilted cloud cover is made of polyester with TPU waterproof barrier on one side for ease in toddler years
  • 2-stage design with longevity through toddler years
  • GREENGUARD Gold Certified
  • The firmness they need and the comfort they want
  • Tested to meet Australian Firmness Standard
  • Meets all ASTM and CPSC standards. Lead & phthalate free
  • Standard Dimensions: 52" x 28" x 5.5"
  • Standard Weight: 14 lbs.

Testing & Certifications

In a third-party CPSC accredited laboratory, tests showed that a baby gets 97% more air while breathing through a Newton Crib Mattress Pad than on a conventional waterproof crib mattress.

Newton Baby 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 baby is sleeping safely.

Care & Use

Washing the Cover:

  • Washing the outer cover before first use is optional.
  • Cover zips off and goes right in the washing machine.
  • Be sure to leave the cover zipped for best results.
  • Wash alone, or with the encasement only to avoid damage to the fabric.
  • Wash on cold with a mild detergent.
  • Tumble dry on low heat. Dry thoroughly. DO NOT hang dry.
  • Wash the outer cover as often as you like.

Washing the encasement:

  • Clean encasement only if soiled.
  • Unzip and remove from core.
  • Zip fully closed prior to wash + dry.
  • Machine wash in cold water with detergent.
  • Wash together with outer cover for a balanced load. Wash without any other laundry.
  • Dry immediately in dryer on tumble dry low heat setting, allowing to dry thoroughly. DO NOT leave damp from wash; DO NOT hang dry.

TIP: The encasement is made with a Viscose material which may develop an odor if allowed to remain damp (like a wool sweater). To refresh, add 1/2 cup baking soda to the wash.

Washing the core:

  • For the really big mess or just for seasonal cleaning, the core can be washed whenever needed.
  • Wash in the shower with soap & cool water or rinse outside with a hose.
  • Shake excess water out of core and stand-up to dry.
  • Place in well ventilated area for faster drying.
  • Avoid drying in direct sunlight and do not use heating elements to speed the drying process.

Shipping & Delivery

  • Ships FREE* in 1-2 business days
  • Ships via FedEx
  • Transit time: 3-7 days once shipped
  • Free Shipping in the contiguous 48 states
  • Shipping fee to HI & AK calculated at checkout based on zip code
  • $$50 shipping fee to Canada. Taxes (GTS/HTS) calculated at checkout based on zip code.

Returns & Exchanges


  • Risk-free, Easy Returns with our 100-night trial, money-back guarantee
  • Easy exchanges or upgrades within 30 days of purchase.


  • Limited Lifetime Warranty
  • Accidental Insurance available through Mulberry


Do I need to add anything to my Newton mattress?

Your Newton mattress consists of the Wovenaire® core material covered by a viscose encasement and the dual-layer removable outer cover with waterproof underlining on the toddler side. While your Newton mattress is the perfect sleep surface for your baby, you may consider adding some other items to create the ultimate sleep environment (and have backups in the linen closet).

  • Chances are you'll want to purchase an Extra Cover. Fully removable, machine washable and interchangeable, our Extra Covers are lifesavers for parents who prefer to have one ready when late-night accidents occur.
  • Our Waterproof Mattress Pad is a safe, breathable option to traditional waterproof pads. It's perfect for adding to your Newton once your little one can roll in both directions on their own (often sooner than you might think)! It's easily the best item to have in your diaper bag as well — for caregivers or when traveling — as it can add a layer of breathability to any traditional sleeping surface.
  • Add sheets to your Newton from day one with our perfect-fit Organic Cotton Muslin sheets. They're as breathable as our mattress, gentle to the touch, and get softer with more washes!

Can my baby breathe through this mattress?

Newton crib mattresses were tested for air permeability, suffocation risk, and Co2 rebreathing factors in a third-party CPSC-accredited laboratory. During these tests, Newton crib mattresses showed 97% more airflow than the leading organic crib mattress, reducing the risk of suffocation.

100-Night Free Trial

Try the Newton Crib Mattress 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.



Top 3 Waterproof Crib Mattress Questions

Toddler beds are the same size as a standard crib mattress. This allows for 2-Stage mattresses to grow with your little one all the way through toddler years.

One side of the Waterproof Crib Mattress offers a TPU lining to protect against those larger accidents during toddler years. Use this side when transitioning your little one into a toddler bed.

The toddler side will allow for easy clean up during those late night accidents. It is a great way to give your little one the breathability and comfort they love from the Newton, with the added ease for you during those challenging years of bed wetting accidents.