Discover all-night support and breathable comfort with this king mattress from Tempur-Pedic. The hybrid technology promotes airflow throughout the mattress, helping to regulate temperature and provide a consistently comfortable sleep experience. The Tempur-Ergo ProSmart Air Base uses specially designed fans to quietly circulate cool or warm air directly from the base and up through the mattress for all-night comfort, and must be paired with the Tempur Active Breeze mattress to enjoy full climate control benefits.