With the CF-1000 iComfort Medium Mattress, cool, supportive sleep is the priority. Weâ€™ve specifically designed this mattress to keep even the warmest sleepers cool. Multi-layered mattress-cooling foam technology adds support, resilience, and temperature regulation for the coolest, most comfortable sleep ever. You donâ€™t have to be a hot sleeper to love iComfort. You just have to like your sleep environment to be refreshingly comfy. The perfect balance of cool and comfortable. Carbon Fiber Memory Foam system channels heat away from your body.