The CoolMax cover that comes on our 10″ Memory Foam Mattress s a cotton/poly cover (40% cotton/60% poly) that incorporates the CoolMax fibre — which is supposed to help wick away your body’s moisture to help you sleep cooler.
We get so few complaints about the mattress sleeping hot (1/2 of 1% or less return for it sleeping too hot), that it seems to do a good job of helping people sleep cool.
For more information on our mattress, see our Memory Foam Mattress Page.