Replacement strap. Length: 256 mm. Width: 20 mm. Material: Nylon. The UltraFit nylon straps are lightweight, soft, and comfortable to wear. They feature an elastic, double-layered, antimicrobial nylon weave that allows moisture to escape. The strap is threaded around the pins and secured with two Velcro fasteners at both ends, making it easier to adjust and ensuring a secure fit on wrists of any size. UltraFit nylon straps are known for their reliable durability and high resilience.