Features: - Made of nylon fabric material, water resistant, tear resistant, lightweight and durable - 30L & 45L large capacity backpack, one main compartment, three front zippered pockets for storing phones or other small items, two side pockets to carry more water bottles, shoes storing pouch and two mesh pockets on the waist strap, convenient for the hiking, climbing, camping enthusiasts - With the water pipe hole, convenient to store the water bag for the outdoor traveling - Shoes separated storing pouch, preventing the items inside backpack to be dirty, convenient and practical - Ergonomic padded shoulder straps and back support for best ventilation and comfortable burden - The whistle on the waist strap for outdoor emergency survival - With adjustable buckle and strap on each side to hang on the trekking pole - Adjustable shoulder strap, chest strap and waist strap to fit your needs, comfortable to wear - Suitable for outdoor activities like traveling, climbing, camping and hiking, etc. Model: Capacity 30L & 45L Two models are available #1 - 30L - Capacity: 30L - The maximum load: 20kg - Material: durable and tear resistant nylon - Shoulder strap: 46 - 78cm / 18.11 - 30.71 inches - Chest strap: 14 - 28cm / 5.51 - 11.02 inches - Waist circumference: 59 - 118cm / 23.23 - 46.46 inches Color: Blue / Black / Purplish Blue Package weight: 0.773 kg Package Size(L x W x H): 30.00 x 20.00 x 8.00 cm / 11.81 x 7.87 x 3.15 inches Package Contents: 1 x 30L Backpack #2 - 45L - Capacity: 45L - The maximum load: 35kg - Material: durable and tear resistant nylon - Shoulder strap: 46 - 102cm / 18.11 - 40.16 inches - Chest strap: 14 - 30cm / 5.51 - 11.81 inches - Waist circumference: 76 - 140cm / 29.92 - 55.12 inches Color: Blue / Red / Black Package weight: 1.128 kg Package Size(L x W x H): 30.00 x 30.00 x 11.00 cm / 11.81 x 11.81 x 4.33 inches Package Contents: 1 x 45L Backpack