The Tempur-ProBreeze 2.0 Medium mattress set by Tempur-Pedic ProBreeze 2.0 Collection features a SmartClimate® cover designed with heat-absorbing fibers to draw heat away from the body, a layer of PureCool® Material designed to pull heat away from your body, the Heat-Diffusing layer added to the top of PureCool® material to absorb excess heat throughout the night, and the Ventilated Advanced Relief™ Material that gives a one-of-a-kind pressure-relieving material to enhanced with added ventilation for increased airflow. This mattress will bring all the support and comfort that you need to get a good night's sleep.