This highly reflective Black Safety Vest is perfect for running, biking, hiking, and walking dogs during early mornings, or evenings when it is dark. It provides you the best protection from motorists by making you "BE SEEN" and "BE SAFE". It is Lightweight (3.8 Oz), and adjustable, thus provides you the best fit and at the same time still allows for full range of motions. Large yellow highly reflective strips provide added safety by increasing your visibility to motorists, providing 1200 foot and 360 degree visibility, thus helps you stay safe by alerting them.