LHI Comes in Three Sizes: 45L, 35L and 25L, Discover Which Bag is Best for You. · Waterproof fabric and Rip Proof · All compartments have two-way openings,180 · Degree Openings for easy packing · The army backpack has a side, front, and bottom compression strap load system. The bottom straps allow you to hang the sleeping bag or tent. · Easily holds 2 pairs of trainers/footwear, towel, gym clothes, meal prep, and small training tools · 2 side cup holders capable of holding 750ml water bottle Patch Strip · Patch strips to add any patch to customize your bag. · Each bag will come with a US patch (please check the pockets of the backpack carefully) Molle System · Molle webbing on the front and either side allow for hanging your gear. and make it the perfect base for a bug-out bag. High-quality zipper · Each pocket comes with two extra zipper pulls Strong plastic · Adjustable quick-side release buckle Mouth for Water Bladder · (hydration pack or tube is not included.) Comfortable back pannel · With ventilated mesh, adjustable and padded shoulder strap, and back area , it makes it comfortable and safe. Dual Cup Holders · The tactical backpack has Cup Holders on both sides of the backpack and can fit 750ml water bottles, umbrellas, or tools. Water repellent · The inner lining material can resist water penetration and protect your items. · Note: This backpack cannot prevent heavy rain, or long-term humidity. 180 Degree Openings · 180 Degree Openings for easy packing · 1Easily holds 2 pairs of trainers/footwear, towel, gym clothes, meal prep, and small training tools Tons of Space Compartment pockets keeping you organized.