This is the same shocking yellow reflective material used by construction workers and traffic cops at night, but with the addition of four super-intense red LED lights that can't be missed even from far away. Use it for safety or just as a cool fashion accessory at the clubs. Each 16" long strap has 8.5" of reflective material, plus black elastic and velcro sections for maximum versatility. It will stretch to fit around most arms, necks, calves, etc. so you can wear it wherever, or attach it around small poles or other objects you want to draw attention to. A tiny button-cell battery that sits comfortably within the strap is included.