ADAPTIVE MEMORY FOAM: Brookstone BioSense memory foam clusters provide the perfect balance of support and comfort filling the gap along neck and shoulders for pressure relieving comfort and alignment. COOLING PILLOW CASE: Provides a cooling and refreshing sleep experience for warm and hot sleepers. DESIGNED FOR ALL SLEEPERS: Sleep like a pro whether you're a back, side or stomach slepper. EASY CARE: The cover is machine washable and dryer safe, so keeping this cooling pillow fresh and clean is simple. Outer Cover: 53% Olefin, 47% Polyester, Inside Cover 100% Polyester; Fill: 80% Polyurethane/20% Polyester