The Alive 2.0 Medium mattress by Beautyrest Harmony features a Lush Sleep Surface made with up to 50 plastic bottles diverted from the ocean, a breathable, moisture-wicking fabric that help you sleep comfortably throughout the night, a layer of Beautyrest® ActiveResponse® Memory Foam to help alleviate aches and pains caused by pressure, and the Precision Support System™ to give consistent, head-to-toe support across the entire mattress and advanced motion isolation for undisturbed rest.