These Gel Arch Supports use an advanced biomimetic design which is shaped to provide more support right where you need it, for maximum relief from foot stress, pain and fatigue. Provides the proper balance of shock absorption and energy return over the entire plantar surface of the foot. The top surface has soft nodules to stimulate and massage vital pressure points. Self-stick, reusable and washable 100% silicone gel. One pair. One size fits most.