Tear-resistant and waterproof: The military backpack is made of waterproof material and Oxford 600D fabric, which is more durable. This trekking backpack comes with thick, ventilated, mesh padded shoulder straps that are more breathable and comfortable. All straps have been reinforced so you don't have to worry about tearing or cracking. Large capacity 100 l: The travel backpack has a large capacity of 100 liters, which is uniquely equipped with an expansion function to increase the capacity from 70 liters to 100 liters. The main storage bag has an elastic drawstring that can expand the backpack. The multiple compartments and reasonable space ensure that your essentials are easy to use and well-organized. COMPREHENSIVE AND PRACTICAL Tactical Backpack: This is a very popular outdoor backpack for men and women. You can use it as hunting backpack, hiking backpack, camping backpack, tactical backpack, travel backpack, survival kit, etc. Suitable for cycling, hiking, fishing, hunting, survival, sports, camping. Specification: Color: Black Material: Oxford 600D fabric Size: 40x30x75cm Capacity: 70L or 100L Contents of the pack: 1x backpack