The all-new TEMPUR-PRObreeze™ California twin mattress has a 3-level system of cutting-edge materials that work together from cover to core to keep you cool all night long. The zip-off cover provides cool-to-touch comfort when you lie down, while exclusive PureCool+™ Phase Change Material absorbs excess heat while you fall asleep. And how’s this for a breath of fresh air: a TEMPUR-CM+™ comfort layer providing maximum airflow, better breathability and a more comfortable sleep experience. Now that’s one cool mattress.