Team Pistol Backpack Outdoor Hiking Trekking Climbing Cycling Multi-functional Waterproof Backpacks (20-25L) The backpack uses high-strength 1000D nylon fabric which is for military use, it can resistant to high temperature and cold, waterproof and scratch-retardant, wear resisting and uneasy to lose the color. All threads and ribbons are used by the fabric which for military use, with beautiful appearance, not distortion and solid durable. There is waterproof lining in the backpack with strong waterproof performance to ensure prevent water coming in moist surroundings. The capacity is about 20L,net weight is 1.76lb, there is cup bag in two sides, the main bag can hold 14 inch laptop, books in A4 paper size and daily commodity. The spare parts of the pack are all adopted as the same color as the pack with high-strength buckle, it can resistant to high temperature and cold, not distortion and no crack. It can also prevent dust and easy to clean, back part is designed as sweet-absorbent breathable, so its very suitable for sporting, traveling, hiking, running and Cycling, its unisex.