The catch? They tend to be expensive, but not all of them are. Sealy's Cocoon Chill Hybrid is one of the more budget-friendly options from one of the biggest bedding manufacturers on the planet.

But in the competitive bed-in-a-box market, Sealy has positioned Cocoon as its flagship online brand. Cocoon currently offers two mattress options: the Chill Memory Foam and the Chill Hybrid.