ADJUSTABLE ELASTIC BELT WITH CLIP CLOURE THAT WILL ENSURE A COMFORTABLE FIT. MADE WITH WATERPROOF MATERIAL SLEEK, EXPANDABLE ZIPPER POUCH THAT CAN FIT YOUR PHONE, KEYS, AND ENERGY BARS INCLUDES TWO REFLECTIVE STRIPS BY THE ZIPPERED OPENING FITS SECURELY AGAINST YOUR BODY TO ELIMINATE BOUNCING AND SHIFTING. 1.5" D X 39" W X 0.5" H