1. Lightweight backpack, reduce the pressure on both shoulders 2. Multi-compartment design, convenient storage 3. Widened and breathable shoulder straps design, comfortable and adjustable according to demand 4. Stitching with thicker stitching, neat and tight, strong and solid 5. Non-slip slider design, easy to open and close 6. Main material material: nylon 7. Lining material material: polyester 8. Size: about 32 x 14 x 45 cm 9. Weight: about 430g 10. Note: this product only includes backpack, excluding other products