The backpack sling bag is made of durable and waterproof Oxford cloth, featuring a USB charging port. With its ergonomic design, it provides comfort and convenience for daily use. The lightweight bag has multiple compartments for easy organization and quick access to belongings. It can be used as a sling backpack, crossbody bag, shoulder bag, and chest bag, making it perfect for various occasions such as office, school, outdoor activities, and travel. Features 1. Durable and Waterproof: The sling backpack is made of high quality water resistant Oxford cloth. It is durable, anti-scratch and anti-theft. It is specially designed. 2. Built-in USB charging cable, more convenient to carry. Size: 35cm x 12cm x 21cm. A great way to carry your daily needs and hold the items you need for a "day trip" around the city. 3. Lightweight: Very light weight to carry. Shoulder strap and back are made of breathable meshs padded that can provide you all day comfort. 4. Ergonomic Design: Two smooth zipper compartment provide super-fast access to your belongings. Adjustable strap allows you adjust length and wear bag in the front or back, and stays in place comfortably even while running. Perfectly fit your body. 5. Can be used as sling backpack, crossbody bag, shoulder bag, sling bag, chest bag, travel bag, suitable for office, school, outdoor, business and other occasions. Specification Material: Oxford cloth Color: Grey, Black Size: 35 x 12 x 21 cm Weight: 700 g Package Include: 1x Sling Bag