Brookstone BioSense Cool Air Pillow BioSense memory foam is designed to help support all sleepers and conforms to the precise contours of your head and neck. Perforations maximize cooling air flow and help give the pillow the perfect balance of softness and support. Mesh gusset forces air out of the pillow to help air circulate and keep you cooler. Includes natural ingredients: seed oil, green tea and charcoal, to help neutralize odors. Cover is removable and washable.