The Running Phone Holder Armband is made of polyester, which is soft and elastic, can fit snugly on your arm, sweat-wicking and non-slip, lightweight and breathable, waterproof and wear-resistant. The waterproof phone armband is designed with a top headphone hole, which can easily insert wired headphones, allowing you to enjoy music while exercising. The waterproof phone armband features a zipper pocket design that can hold your credit cards, ID cards, car keys, lock keys, receipts, etc. at the same time. The Running Phone Holder Armband with a pocket can free your hands and prevent your phone from falling, allowing you to easily carry items and enjoy sports, which is very suitable for most outdoor sports, such as jogging, running, cycling, climbing, hiking, gym, etc.