High Visibility: Super reflective running gear can be seen from 800 feet or more. Great for kinds of outdoor activities at night. High Quality: Reflective bands are made of Nylon fabric and reflective stripes, lightweight and breathable, easy to carry. Adjustable: 4 belt buckles and strap adjusters, made of strong, hard plastic. Fits over any clothing in any season. Elastic: Reflective safety vest shoulder to waist expands from 14" to 21". Fits most for adult and kids, women, men. waist circumference expands from 27" to 41", Fits for all body types, plus size. High Versatility: reflective vest for any outdoor activity; including Trekking, Running, Cycling or motor biking, Walking, Jogging, Construction or traffic work, Roadside emergencies where high visibility clothing is required.