CoolBack pads are made from a pile fabric with a dense concentration of resilient polyester fiber that are closely shorn to provide maximum cushion with minimal matting or slipping. The Extra-Heavy Wool CoolBack pad is almost a double thickness of the standard CoolBack. Being machine washable and dryer safe makes caring for your CoolBack pad easy and actually improves it’s orthopedic function. 32″ x 32″. Made in the USA.