As its identify implies, It's a hybrid mattress, meaning that it brings together quality foam with flexible coils. This combination of materials within the Chill Hybrid gives what some reviewers say can be a increased amount of responsiveness as opposed to Cocoon Chill. This mattress in the box ships free https://mattressnearbyme33107.blogdon.net/the-fact-about-dreamcloud-mattress-that-no-one-is-suggesting-45763972