The Self Cooling Cushion is a cooling cushion designed for use by individuals who sit for long periods. Designed for wheelchairs, sofas, office chairs, lawn chairs, kitchen chairs, and bench seats, this cushion reacts within 30 seconds by emitting a slow, soothing coolness. It is made with a blend of natural minerals and crystals for a relaxing and revitalizing comfort. This self-cooling cushion absorbs body heat, turning the crystals into a liquid, then automatically returning to a crystal state, ready for the next day's use. It automatically regenerates to crystal form during the night. Two ties are included to attach the cushion to the seat back or the seat itself. The cushion is non-toxic,requires no refrigeration, and the cotton liner is removeable for cleaning. DIMENSIONS (LxW): 17 x 19 inches. WEIGHT: 6 or 8 pounds.