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Waterproof Mattress Protector

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Our specially-engineered mattress protector is crafted with the highest quality waterproof and organic cotton materials. Its primary purpose is safeguarding your child's mattress and ensuring a healthy and clean sleep environment year-round. The waterproof feature prevents dust accumulation, accidents, and spills, providing an effective barrier against potential damage.

Product Details

The waterproof feature prevents dust accumulation, accidents, and spills, providing an effective barrier against potential damage. Equipped with elastic corner straps, this mattress protector is sure to stay in place.


Mattress Protector: 1-Year Limited Warranty.

See our Warranty Page for more details

100 Night Risk-Free

We're so confident in our childrens mattress, we want you to try it risk free. If you and your little one don't fall in love with the mattress after 100 nights sleeping on it, just let us know. We'll pick it up and give you a full refund, no questions asked.


This Mattress Protector ships to your doorstep in 3-7 business daysl

Washing and Care Instructions

Experience a clean and refreshing sleep with our machine washable sheets. Designed for convenience and hygiene, this mattress protecto can be easily tossed into the washing machine, allowing you to maintain a pristine sleep environment with minimal effort.

We recommend a machine wash on delicate cycle in cold water, or hand wash in cold water. Air dry or tumble dry without heat.

Waterproof Mattress Protector
  • Size: Twin

Did you Know?

Roughly 30% of children suffer from allergies.

Mattress protectors fight against allergens created by dust mites and protects mattresses from liquid spills or accidents.

  • Elastic Corners

    Convenient elastic corners grib onto the mattress to ensure the mattress stays in place to do its job.



    (All Products) - Our products meet all standards from the Consumer Product Safety Commission, ensuring they're free of lead, phthalates, and other harmful chemicals.


    (All Products) - All of our products comply with Prop 65, which means we will disclose any chemicals known to cause cancer, birth defects, or other reproductive harm. Thankfully we don't make our products with these chemicals - so there's no need to worry about it.


    (Sheets/Protector) - Textile Exchange is a global non-profit driving positive impact on climate change across the fashion and textile industry. It guides a growing community of brands, manufacturers, and farmers towards more purposeful production from the very start of the supply chain.  Its goal is to help the industry to achieve a 45% reduction in the emissions that come from producing fibers and raw materials by 2030.

Customer Reviews

Based on 725 reviews
Great products

Thank you!

Lindsay Menia
Great bed for my little one

My daughter has been loving her new bed. We are really impressed because it is extremely comfortable and she has been sleeping in later since she started sleeping in it. Money well spent!

Bed Snob says: Get this bed!

I used to own a luxury bed store, and for that reason, mattress shopping and receiving is usually less than fun. I am constantly comparing beds/mattresses to the very expensive and very amazing beds we sold....

Enter 5 Little Monkeys: I have a 3 year old who is transitioning to her big girl bed. Finding a mattress that is comfortable and isn't going to off gas, and isn't going to break the bank is a challenge. I was thinking we were going to get an Avocado mattress, but something said keep looking. I ordered and was really pleased with the price. It arrived quickly and we just set it up tonight for our daughter. She loves it! And she was BLOWN away by the monkey that came with it. The mattress protector and pillow are great too... I am a happy customer and will be referring everyone to 5 little monkeys!

A Lindsay
One complaint

My only complaint is the mattress protectors don't come in King sizes - would buy in a heartbeat

If only...

Ordered the sleep system and an additional twin mattress protector. Love it all so much, wish the protectors came in King sizes for my own bed