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A child lies on their side on a plain white mattress with wooden bed rails. Text below reads: Newton Baby Waterproof Twin Mattress Pad—ultra breathable for less risk of suffocation and overheating.
A close-up shows the Newton Baby Waterproof Organic Twin Mattress Pad’s organic cotton surface, washable waterproof lining, universal fitted skirt, GREENGUARD Gold badge, and plastic waste reduction achievement.
Two folded mattress pads side by side: the thicker one labeled “Newton Baby” under “US” (Waterproof Twin Mattress Pad), and the thinner labeled “Competitor” under “THEM.” Below: “Offers more protection—and a comfier, washable sleep.”.
A child in a beige knit sweater and blue jeans sits on an adult’s lap, holding a book. Text below reads, “Newton Baby Waterproof Twin Mattress Pad—machine washable for easy cleanups when accidents happen.”.
Close-up of Newton Baby’s Waterproof Twin Mattress Pad on a mattress, showing mitered corners and all-around double elastic for a secure fit. Features a green tag and is perfect as a kids twin mattress pad.
A young child with heart-shaped sunglasses and headband smiles on a white bed. Text: Newton Baby Waterproof Twin Mattress Pad—ultra-soft, washable, waterproof protection for kids' beds.
Two young children in matching beige knits sit on a bed, smiling and holding hands atop the Newton Baby Waterproof Organic Twin Mattress Pad, creating a cozy and joyful atmosphere.
A bright kids' room features wooden bunk beds topped with a Newton Baby Waterproof Organic Twin Mattress Pad, a play kitchen, beige pillows, world map wall art, and a "LONG LIVE BOYHOOD" sign—all in a light, neutral color scheme.
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Completely Waterproof

Completely Waterproof

Machine Washable

Machine Washable

Better Sleep

Better Sleep

Waterproof Twin Mattress Pad

43 Reviews

With cotton surface.

Because accidents happen. Our completely washable & waterproof mattress pad is ideal for potty training and pairs perfectly with our Kids’ Mattress. Featuring a super-soft cotton jersey surface, it adds a comfy cushion to any twin mattress.

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Ships FREE* in 2-4 business days

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Frequently Bought Together

  • A green circled outline with a green outlined umbrella

    Completely Waterproof

    Waterproof lining preserves and protects your mattress from leaks, moisture and mold.

  • A green circle outline with a agreen outlined washing machine inside the circle

    Machine Washable

    Allows for quick changes when accidents happen and a cleaner, more hypoallergenic sleep environment for your big kid.

  • 100% Better Sleep

    Better Sleep

    Adds an ultra-soft cotton jersey surface and a comfy cushion to any twin mattress.
Baby2Baby

Your donation helps Baby2Baby continue providing basic essentials including diapers, formula, safe sleep spaces and more to children they serve across the country.

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

A child wearing cuffed blue jeans lies on a white mattress inside a wooden bed frame, with only the legs and bare feet visible.

Essential Crib Mattress Pad | Crib Mattress Pad | Mini Crib Mattress Pad | Twin Mattress Pad

Ultra-soft top layer adds a comfy cushion to any traditional mattress.

Waterproof fabric lining provides complete protection.

Mitered corners provide stretch to fit tightly and securely around any mattress.

Our mattress pad 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.

Brooke W.

Close-up of a light-colored wooden crib with a white mattress, showcasing smooth wood grain and slatted sides in a softly lit room.

“It was a no brainer to turn to Newton when we transitioned our son to a twin. Nice and cooling and gives him the same comfort as his crib.”

Patrick W.

A smiling young girl lies on her stomach on a neatly made bed with a white mattress in a bright, cozy bedroom. The bedframe is wooden, and the room has soft pink curtains and decor.

“My two-year-old falls asleep almost instantly when she touches it. It's the perfect amount of cushion for her firm spring mattress.”

Fernanda B.

A neatly made bed with a white mattress protector, a textured cream quilt, and a corner of a patterned rug visible on a wooden floor. A green label with white text is attached to the mattress protector.

“I love it! Super soft, high quality and my son sleeps better when the cover is on the mattress!”

Megan T.

A young child with braided hair lies on their back on a white bed, smiling with eyes closed and hands playfully raised near their head. The child is wearing a blue ruffled top and beige pants.

“Bought the twin pad for my daughter to use on a Montessori bed. Best decision ever.”

Andrea R.

A child lies on their stomach on a top bunk bed with light wood rails, reading a book. A world map hangs on the wall in the background. The room has a calm, cozy atmosphere.

“Very effective in protecting my son's mattress from overnight accidents. And it's quite cushy as well!”

Product Details

  • Organic cotton surface with waterproof lining
  • Pairs perfectly with our Kids’ Twin Mattress and can fit ANY twin mattress
  • Ideal for potty training
  • Extra batting/cushion for a layer of comfort
  • 39” x 75” with a 12” skirt

Testing & Certification

  • Waterproof Lining is OEKO-TEX certified
  • GREENGUARD Gold Certified - Our mattress pad is independently tested
    and certified for low chemical emissions, exceeding the highest
    industry emissions safety standards to help improve indoor air quality.

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
  • Shipping fee to HI & AK calculated at checkout based on zip code
  • $25 shipping fee to Canada. Taxes (GTS/HTS) calculated at checkout based on zip code

Care + Use

  • Machine wash cold on gentle cycle.
  • Tumble dry on low. Do not iron.
  • Only non chlorine bleach when needed. Shrinks to fit.

Returns & Exchanges

Return / Exchange Policy

  • Risk-Free returns
  • 30 days in original packaging

Warranty Policy

  • 2-Year Limited Warranty

FAQ

Does the pad offer cushion/comfort/padding?

It sure does! In addition to a completely waterproof lining, our mattress pad features an organic cotton surface and a comfy cushion to provide additional padding for your big kid.

Can I use a sheet?

We recommend using a cotton sheet for the most comfortable and breathable sleep for your child.
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.

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Top Waterproof Twin Mattress Pad Questions

There are a number of benefits to using a mattress pad for your child. In addition to protecting your mattress when accidents happen (especially during potty training!) a premium mattress pad will help create a more sanitary space, preventing moisture and mold. Lastly, a mattress pad offers the added convenience of a quick change while you throw it in the wash.

Typical mattress pads make a bed more comfortable by adding a layer of padding to the mattress, while mattress protectors shield the mattress from accidents and general wear and tear. With the Newton Waterproof Twin Mattress Pad, you get the best of both worlds: a layer of comfy cushion and the waterproof protection your big kid needs.

When selecting a mattress pad, look for premium materials and a GREENGUARD Gold certification. This means that — like the Newton Waterproof Mattress Pad — the pad is low in chemical emissions and as a result, emits minimal gases. Also very important: look for the convenience of machine washability and a snug fit that allows for easy on and off!

ALT text: Close-up of a baby's hand gently resting on a Newton mattress pad with a visible Newton tag.

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