1. Material: 900D polyester coating + 210D polyester + three-grain mesh + PE cotton + anti-nylon webbing 2. Front pocket design, can store cassettes, mobile phones, chargers and other small items 3. Double-layer structure, storage is more efficient and convenient 4. Groove design improves air circulation and reduces the feeling of stuffiness on the back 5. High-strength wear-resistant material, special waterproof surface treatment 6. Double-head zipper design, smooth opening and closing
