About This 90% Cooling Nylon,10% Spandex u3010Double Sided Superior Cooling Experienceu3011Both sides of the cooling fabric made with 90% High Elasticity Super Cooling Fiber and 10% Spandex, this double-sided cooling comforter for hot sleepers features a Q-Max rating of >0.4, delivering an instant 4u00B0F cooler sensation. It's