1. Material: polyester, flannel 2. Features: waterproof, breathable, wear-resistant, load-reducing, shock-resistant 3. Flannel lining, delicate and soft, good shock absorption effect 4. Reinforced handle design, tight stitching, good load-bearing, durable 5. High-quality hardware buckles, easy to adjust, sturdy and durable 6. The use of waterproof fabrics is safer and more secure 7. External dimensions: 13.3 inches: 36 x 26 x 3 cm, 14.1-15.4 inches: 39 x 27.5 x 3 cm, 15.6 inches: 42 x 31 x 3 cm 8. Internal dimensions: 13.3 inches: 34.5 x 24.5 x 2.5 cm, 14.1-15.4 inches: 37.5 x 26 x 2.5 cm, 15.6 inches: 40.5 x 29.5 x 2.5 cm 9. Weight: 13.3 inches: 300 grams, 14.1-15.4 inches: 350 grams, 15.6 inches: 400 grams 10. Remarks: Only the computer bag will be sent for delivery, no other!