75L BackpackPolyester liningZipper closure13?? shoulder dropMATERIAL ?C 75 Liters. This backpack is made of 600D Water-resistant Polyester. YKK Zipper.HYDRATION COMPARTMENT ?C This assault pack with hydration compartment and can hold a 5 Liter bladder, the tube is fed through the top side of the bag near the grab handle.MOLLE WEBBING ?C You can hang on tools, trekking poles, tents, sleeping bags, and other accessories using this molle design. A rifle also can be hung with a side strap and a side pocket.SIDE POCKET & QUICKLY ACCESS ?C This hiking backpack with 2 side pockets(8??*8??) and 2 bigger pockets (7.5??*13.8??) that can hold a water bottle or camping & survival gear. The backpack has large zipped access at the front that can quickly access the main compartment, opened as a 15.6?? luggage.DURABLE & MULTIFUNCTIONAL??C This molle backpack with chest straps to cope with the weight so that it??s well used as a 3-day assault pack, bug-out bag, survival backpack, army backpack, trekking backpack, or day pack. Suits for hiking, trekking, camping, climbing, and traveling.Hydration BladderPremium Quality: 2.5L, made of EVA, and the tube material is PVC. No ??Plastic?? smell or taste and is proven to bear strict tests.STAY HYDRATED: 2.5 Liter capacity provides plenty of water to keep you hydrated on any outdoor adventure; Perfect when you??re hiking, cycling, camping, or backpacking.LEAKPROOF: This water bladder uses well-sealing technology, It has passed the air pressure test and is completely pressure-resistant and leak-proof.WELL-SEALING WATER BLADDER: Bite the mouthpiece to suck water. Soft mouthpiece with easily accessible ON/OFF valve. It also has a cover to keep dirt out. Conveniently control the water flow by biting.Notice: The screw cap should be securely closed as tight as possible to avoid potential leaking! Twist the lid clockwise to fasten it tightly until the lid can not move any further under force!