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Check delivery options for your address and order at checkout. Contact a showroom before visiting to confirm the exact item and option are available.
Delivery detailsMachine washable; follow the care label The mattress comfort exchange does not cover accessories. Confirm applicable return terms before purchase.
Warranty supportComfort-exchange exclusionsThe Helix Kids Waterproof Mattress Encasement provides full 360° protection for your child's Helix Kids Mattress. Zippered encasement guards against spills, bed-wetting, allergens, and dust mites.
Compare Twin-size options side by side. Open a product to choose its profile, color, or other options.
Swipe to compare both mattress protectors →
Features come from each product’s description. “Not listed” means the detail hasn’t been provided. Check the configuration shown below each model.
| Twin | Helix SleepHelix Kids Waterproof Mattress Encasement | Sleep & BeyondOrganic Cotton Waterproof Mattress Protector |
|---|---|---|
| Price (Twin) | $69 | $159 |
| Protection | 100% waterproof | Waterproof |
| Fit & coverage | Zippered, full mattress encasement | Deep fitted skirt |
| Designed for | Helix Kids Mattress | Not listed |
| Care | Machine washable; follow the care label | Machine washable; follow the care label |
| Top fabric | Not listed | 100% organic cotton |
| Barrier | Not listed | Breathable, food-grade waterproof membrane |
| Local availability | Check showroom availability | Check showroom availability |
| Shop Twin |
Helix Sleep was founded in New York City by a team of engineers and product designers who were frustrated with the mattress industry’s one-size-fits-all approach. They asked a simple question: if people are different sizes, sleep in different positions, and have different pressure-relief needs, why does everyone buy the same mattress? Their answer was a lineup of hybrid mattresses designed around specific sleep profiles, each model engineered for a particular combination of body type, sleeping position, and firmness preference. Helix’s Sleep Quiz has matched millions of sleepers to their ideal mattress using data-driven recommendations based on sleep science research. Every Helix mattress is designed in New York and manufactured in Phoenix, Arizona, using CertiPUR-US certified foams. All materials are tested for quality and safety, and every mattress comes with a limited lifetime warranty, one of the strongest warranties in the industry, plus a 120-night sleep trial.
Explore Helix SleepA little help with your protector, from fit and care to ordering.
Choose the mattress size, then check its full height, including any topper, against the protector’s fit details. A fitted protector covers the sleep surface; a zippered encasement surrounds the mattress. Check the listed protection for this model. Our team can help you check the fit at Mattress Store Contact.
The product description lists 100% waterproof protection. Coverage: Zippered, full mattress encasement. Follow the care label and review the mattress warranty requirements at warranty coverage.
Machine washable; follow the care label. For help with this model, contact our team at Mattress Store Contact.
The comfort exchange covers eligible mattresses, not pillows, bedding, toppers, protectors, foundations, or other accessories. Confirm the applicable return terms before purchase at 120-night guarantee.
Warranty terms vary by brand and model; a specific term is not listed in this product’s details. Keep your receipt and product labels. Find help with a claim at warranty coverage.
Delivery options depend on your address, order, and selected item. Contact the showroom before visiting to confirm that this model and option are available. See our stores at showroom locations and delivery information at delivery details.