1. High-density wear-resistant fabrics, with PVC coating on the back, more tear-resistant, friction-resistant, sturdy texture 2. Lightweight design, external USB connection to cell phone, convenient and practical 3. Adjustable shoulder straps design, wider shoulder straps, comfortable to carry without shoulder fatigue 4. Smooth zipper design, no jamming 5. Comfortable and breathable fabrics, large capacity pockets, durable and wear-resistant 6. Layered pocket design, easy to categorize and place items 7. Thickened hardware, polished and sanded many times, sturdy and durable 8. Material: oxford cloth 9. Lining texture: nylon cloth 10. Weight: about 180 g 11. Size: about 16 x 8 x 33 cm
