 Take the Helix Sleep Quiz and find your perfect mattress in under two minutes. And your personalized mattress is shipped straight to your door, free of charge. Helix offers a 100-night trial and a 10- to 15-year warranty to try out your new Helix mattress. Every Helix mattress has a hybrid design combining individually wrapped steel coils on the base with premium foam layers on top. It's the perfect combination of comfort and support. Even better, the setup's fast and really easy.