Waterproof nylon material with adjustable belt, easy to adjust suitable length and carry. It is enough for putting in your wallet, keys, cards, phone, and it's easy to keep your things organized. Besides, the bag is practical and lightweight for daily or travel use for all outdoor and indoor activities, such as running, training, jogging, biking, fitness, shopping or doing business as a purse, hiking, beach, touring, etc. 7 7/8" L x 1 31/32" W x 5 29/32" H