The Happy with Helix Guarantee
Our 360° Mattress Encasement helps you guard against the threat of bed bugs and dust mites.
Ensure 360 degree protection with a Waterproof Mattress Encasement that fits snugly around your entire mattress.
Our waterproof design guards against everything from spills and accidents to the buildup of dirt and debris on your mattress.
With an 8 inch height, the Waterproof Mattress Encasement is the perfect fit for the Helix Kids Mattress, or any mattress under 8 inches in height, giving you and your child complete peace of mind.
Do you offer free shipping?
Yes! Our bedding ships for free in the contiguous USA.* Please refer to specific product pages for shipping estimates. *Shipping rates apply for Alaska, Hawaii, and Canada. See Terms & Conditions of Sale.
How does your 30 day free trial work?
You have 30 nights to sleep on your bedding. If you are not completely satisfied for any reason, we’ll organize a seamless exchange or facilitate a free, fast return. Learn More
What if I want to return my bedding?
We get it: every person is unique with their own different sleep preferences, and you need to see how it feels. If you’re not 100% satisfied with your purchase, we will do everything we can to make it right. Go ahead and sleep on it: you have 30 nights to try it out. If you aren’t completely satisfied for any reason, we’ll organize a free, fast return. For more about returns & exchanges, click here. To start a return, click here.
What if something is wrong with my bedding?
Don’t worry: your new bedding is protected against defects in workmanship and materials by a 1 Year Warranty, and claims are straightforward. This limited warranty covers all manufacturing defects, and gives you certain legal rights. Learn More
Do you offer financing?
Yes! We’ve teamed up with Affirm to offer financing as low as 0% APR on qualifying purchases. You just have to choose “Affirm- Pay Over Time” at checkout to see your offer. See more info here.
What sizes do you offer?
The Mattress Encasement can fit over mattresses up to 8 inches in height.
Twin: 38" W × 75" L × 8" H
Full: 54" W × 75" L × 8" H
Where is the Mattress Encasement made?
Made in China and/or Thailand
Is the Kids Waterproof Mattress Encasement machine washable?
Yes, the Kids Mattress Encasement includes quick and easy care! We recommend machine washing your Mattress Encasement on a cold, gentle cycle with like colors. Please do not dry clean, bleach, or iron, as these can damage the waterproofing layer. For small spills, we recommend spot cleaning with cold water and a mild household detergent or diluted cleaner.
How do I arrange my Kids Mattress Encasement with my sheets?
We recommend adding your Kids Waterproof Mattress Encasement directly over the surface of your child's mattress and then adding sheets and bedding on top. The Kids Mattress Encasement will provide 360 waterproof coverage beneath your child's bedding.
What is the Mattress Encasement made from?
Top & Sides: 100% polyester microfiber with TPU Waterproofing Layer
Bottom: 100% polyester microfiber with non-skid bottom
Does the Kids Mattress Encasement fit any mattress size?
The Kids Waterproof Mattress Encasement is designed to fit mattresses up to 8 inches in height. It is the perfect fit for the Helix Kids Mattress or any other children's mattress and offers 360 protection to guard against spills, stains, and accidents.
Do you offer free shipping?
Yes! Our bedding ships for free in the contiguous USA.* Please refer to specific product pages for shipping estimates. *Shipping rates apply for Alaska, Hawaii, and Canada. See Terms & Conditions of Sale.
How does your 30 day free trial work?
You have 30 nights to sleep on your bedding. If you are not completely satisfied for any reason, we’ll organize a seamless exchange or facilitate a free, fast return. Learn More
What if I want to return my bedding?
We get it: every person is unique with their own different sleep preferences, and you need to see how it feels. If you’re not 100% satisfied with your purchase, we will do everything we can to make it right. Go ahead and sleep on it: you have 30 nights to try it out. If you aren’t completely satisfied for any reason, we’ll organize a free, fast return. For more about returns & exchanges, click here. To start a return, click here.
What if something is wrong with my bedding?
Don’t worry: your new bedding is protected against defects in workmanship and materials by a 1 Year Warranty, and claims are straightforward. This limited warranty covers all manufacturing defects, and gives you certain legal rights. Learn More
Do you offer financing?
Yes! We’ve teamed up with Affirm to offer financing as low as 0% APR on qualifying purchases. You just have to choose “Affirm- Pay Over Time” at checkout to see your offer. See more info here.
What sizes do you offer?
The Mattress Encasement can fit over mattresses up to 8 inches in height.
Twin: 38" W × 75" L × 8" H
Full: 54" W × 75" L × 8" H
Where is the Mattress Encasement made?
Made in China and/or Thailand
Is the Kids Waterproof Mattress Encasement machine washable?
Yes, the Kids Mattress Encasement includes quick and easy care! We recommend machine washing your Mattress Encasement on a cold, gentle cycle with like colors. Please do not dry clean, bleach, or iron, as these can damage the waterproofing layer. For small spills, we recommend spot cleaning with cold water and a mild household detergent or diluted cleaner.
How do I arrange my Kids Mattress Encasement with my sheets?
We recommend adding your Kids Waterproof Mattress Encasement directly over the surface of your child's mattress and then adding sheets and bedding on top. The Kids Mattress Encasement will provide 360 waterproof coverage beneath your child's bedding.
What is the Mattress Encasement made from?
Top & Sides: 100% polyester microfiber with TPU Waterproofing Layer
Bottom: 100% polyester microfiber with non-skid bottom
Does the Kids Mattress Encasement fit any mattress size?
The Kids Waterproof Mattress Encasement is designed to fit mattresses up to 8 inches in height. It is the perfect fit for the Helix Kids Mattress or any other children's mattress and offers 360 protection to guard against spills, stains, and accidents.
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360° Waterproof Protection
Machine Washable
Perfect Fit For Helix Kids Mattress
