Belt fanny pack made of nylon and spandex, reliable, stretchable and securely secure items. Fashionable fanny pack with ventilation holes and mesh design ensure breathability, ideal for running, exercising, traveling, etc. Fashionable fanny pack with ventilation holes and mesh design ensure breathability, ideal for running, exercising, traveling, etc. Slime running belt suitable for 29″-31″ waists. (Please measure the waist circumference before purchasing). Package contents: Running waist pack x 1