The iComfort Sleep System by Serta features memory foam mattresses with the latest in technology to bring you a deeper, more restful sleep night after night. Each mattress features Serta’s Cool Action Gel Memory Foam, a revolutionary new memory foam infused with their MicroSupport gel for a cooler and more comfortable sleep. The unique Cool Action material is 12 times more breathable than ordinary memory foam, and increases airflow, provides superior pressure relief and delivers an extremely comfortable sleep surface without a lengthy break-in period. Choose between an adjustable base or box spring for a complete iComfort Sleep System set. Wake up feeling completely rejuvenated with a mattress from the iComfort collection.