... wrist strap,Velcro wrist band,Velcro strap... 1)100% nylon 2)Any size&color as per request 3)SGS certificated...Velcro wrist strap,Velcro wrist band,Velcro strap ... requirement.6)All products have passed ROHS & SGS, and use environmental protection raw material to dye, conform to the European environmental protection standards.