(Thermotex Therapy Systems) The Thermotex Therapeutic Extended Leggings are sold in a pair. Each legging utilizes 4 infrared pads . The cover portion of the legging is 100% nylon with a polyurethane coating, and is washable. The infrared pads themselves are not washable or flexible, therefore should never be washed or bent. Adjustable high/low power settings. Velcro fasteners to adjust fit.