Soft, breathable, and lightweight, the Sport Loop features a hook-and-loop fastener for quick and easy adjustment. The double-layer nylon weave has dense loops on the skin side that provide soft cushioning while allowing moisture to escape. This weave is made with 82% recycled yarns, some of which contain material from discarded fishing nets. Material: 100% recycled nylon, 100% recycled polyester, 100% recycled spandex Compatibility --- Apple Watch Models 38mm 40mm 41mm