This sling backpack is designed for outdoor activities like biking, hiking, and cycling. It features a USB charging port, adjustable strap, and multiple compartments for all your belongings. Made of high-quality oxford fabric, it is durable, scratch-resistant, waterproof, and lightweight. This multipurpose bag can be used as a sling, crossbody, or messenger bag. Perfect for travel, gym, school, and other occasions. Enjoy hands-free convenience and style with this amazing backpack!Features1. Large Capacity: Size: 6.7 x 2.8 x 13 inches. Shoulder bag with multiple compartments and pockets including a hidden pocket, mobile phone pocket, big pockets with room for all your belongings. 2. USB Charger Port: Shoulder Bag with USB Charging Port (without portable USB charging cable), you may charge your mobile phone with the USB charging port. A Mobile Phone Pocket in shoulder strap makes you convenient for charging.3. Adjustable Sling Bag: The flexible strap of chest bag can be adjusted varied, you can freely adjust the shoulder straps according to your preferences. Meanwhile the breathable shaped padded shoulder strap and back panel is extremely comfortable and lightweight to carry around, which will release heat rather than accumulate. 4. Material: We are chosen purpose high quality oxford fabric material, which is durable, scratch-resistant, comfortable, waterproof and lightweight. High-density and strong hand straps will reduce your burden and travel easily.5. Multi-purpose Sling Backpack: It's a multipurpose bag that can be used as sling bag, sling backpack, crossbody shoulder bag, hiking daypack, travel chest bag, casual daypack, messenger bag, business bag. Perfect for travel, gym sport, hiking, camping, biking, family trip, office, school, and other occasions.SpecificationMaterial: Oxford clothColor: Black, Red, Grey, Green, Khaki Size: 17 x 7 x 33 cm/ 6.7 x 2.8 x 13 inchWeight: 340 gPackage Include:1 Sling Backpack