Heat in the microwave (10 seconds each side) for soothing warmth. Chill in the freezer 2 hours prior to use for cold therapy (20 minutes maximum is recommended).
Material: 90% Polyester / 10% Spandex. Adjustable 100% Nylon Plantar Fascia strap provides customized arch support. Washing instructions: remove gel packs, hand wash with mild soap, drip dry.