Pioneer® wrist cuffs meet ANSI/ISEA 107-15 Class E, Supplemental Type visibility requirements, which means it must be worn with other items, such as reflective vests or jackets to achieve Class 3 standards Wristband is 8 inches long and has a hook-and-loop closure for adjustment, it’s one-size-fits-all sizing is perfect for both men and women Hi-Vis polyester mesh with solid binding has StarTech® reflective tape providing excellent visibility, used for running or jogging, traffic or security patrol, construction, and outdoor work Comes as a pack of 2 hangable cuffs in fluorescent orange or yellow/green offering supreme visibility and safety.