THE ELASTIC AND STEADY WATERPROOF SPORTS WAIST BAG IS GREAT FOR RUNNING, TRAVELING, RACING AND OTHER OUTDOOR EVENTS. IT CAN HOLD MOBILE PHONE, KEYS, SMALL CHANGES, MP3 PLAYERS, WALLET, SNACKS AND SO ON. THE REFLECTIVE POCKET WOULD BE SAFE WARNING IN THE DARKNESS. THE BELT BAG IS MADE OF WATER-PROOF MATERIAL, WHICH WILL KEEP YOUR VALUABLES DRY WHEN YOU'RE EXERCISING OR SWEATING. WITH ADJUSTABLE ELASTIC STRAP, THE BELT FITS 29 INCH-45 INCH WAIST. CUSTOMIZED LOGO IS ACCEPTABLE. 35 13/16" L X 1 3/16" W