 The Northlands Talk Station. Doc Radio. AM 1360. KKBJ. The Helix lineup offers 20 unique mattresses, including their award-winning Lux and Ultra Premium Elite collections. The Helix Plus, a mattress designed for big and tall sleepers, and the Helix Kids mattress designed for growing bodies. Take the Helix Sleep Quiz and find your perfect mattress in under two minutes. And your personalized mattress, 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.