Reflective PT Belt is the optimal choice for workout enthusiasts who want to stay safe while working out in the dark. Constructed of 100% elastic polyester material. these military reflective belts are designed to not restrict the wearer movements while training. Reflective silver line and safety green color provide maximum visibility during the evening and early morning hours. Measuring 48? X 1.75?. this reflective running belt features an easy quick release buckle. ??