Large Space and Capacity — This military tactical backpack measures 28.3*13.3*6.6 inches(L x W x H), and 2.7Ibs weight. The main storage bag is large enough to load your necessary tools, such as sleeping bag, mat, hammock or shoes and luggage, the elastic drawstrings can keep your bag tight. Except that, there are extra a laptop compartment, a front zipper pocket and two side pockets. The 2 side pockets can contain bottles, umbrellas and other neccesorry tools. Waterproof Material&Long-term to Use — The Material of the hiking backpack men is durable oxford and water resistant material, we are more focusing on stitching and strengthened zippers to ensure that the hiking bagpack can be durable and sturdy to use. The waterproof hiking backpack is very practical for hiking trips, camping, backpacking, traveling, hunting, or climbing activities. 2 Adjustable Sponge Straps — The straps are foamed with 2cm sponge pudding, which can release your pressure from your shoulders, and feel more comforatable even you walk for a long distance. The material of the sponge straps is more durable than other traditional hiking daybacks. The length of the straps are adjustable, so you can find a comfortable tightness for your camping trips. Built Inner Aluminum Frame — The frame can keep the camping backpack in well shape and ensure all parts of the backpack bearing evenly weight pressure, which can effectively reduce your weight burden on shoulder. The inner frame system is suitable with different types of people in height, weigt or body.