Made of water resistant and tear resistant Oxford cloth.Casual and fashion style, with smooth double access zippers and adjustable shoulder strap metal buckle, external USB charging port (power bank not included) shown in every details.The shoulder strap and the back is made of breathable material, make you feel comfortable when travel, hiking and so on.There is a hidden earphone hole on the front, providing easy access to your earphones, you can enjoy music anytime and anywhere.Item Size: 6.3x3.54x13Imprint Area: Please contact Customer Service at 877-787-4564 for more information.