Feature 1Outdoor Men's Leisure Chest Bag: The bottom of the shoulder strap is detachable design, can be swapped around the shoulder, designed for the backpack habit of different people. 2Hidden Headphone Jack: There is a hidden headphone jack on the front for easy use of headphones and charging with mobile power. You can enjoy music anytime and anywhere. 3Excellent Grade Material: The bag is made of nylon material, with waterproof function; The durable metal two way zipper is smooth, allowing you to open easily. 4Comfor .wang-edit-text .wang-edit-text .wang-edit-text Package List1 x Backpack1 x Data Cable