1.Super-bright reflective silver stripes on the reflective vest offers 360visibility, makes you be seen 800 feets away by cars at any weather condition like dark/rain/fog all the time. 2.Elastic and Adjustable; These reflective straps are elastic, with 4 adjustable buckles, high flexibility, one size fits most. 3.Reflective gears are made with high quality polyester and reflective coating material, lightweight and breathable, easy and comfortable wearing, you can wear them over most clothing in most season, also easy to fold, you can carry it in your pocket. 4.Great for kinds of outdoor activities at night; walking/running/cycling/motorcycling/skateboarding/jogging/dog-walking/kids play. It is also good choice for anyone who works in dark. 5.Note; they can't illuminate by themselves, they will only be reflective when light falls on them.