PAIN RELIEF: assists in the treatment of plantar fasciitis, strained Achilles tendons, heel spurs, calf, foot, ankle, thigh, hip and injuries.STRECHING AID: Good for stretching foot, ankle, hamstring, quads.FEATURE: Two adjustable Velcro tape allows larger range of foot sizes, Velcro tape are strong enough, fit your various exercise needs.MATERIAL: Made of polyester canvas, no elastic, only strapping, Straps are extremely durable. You can place as much tension on the straps as you desire.