G4Free Military tactical backpack is made of 1000D polyester fabric, high-density, durable, and water-resistant. Size approx: 19*12*12.5 inch / 48.5*30*32cm (H*W*D), Capacity: 45L The Molle shoulder backpack has a Molle webbing system throughout the backpack for more attachment. Two D-rings on shoulder straps to hang hunting accessories. Straps at the bottom can be used to hold a tent, sleeping bag, or roll-up mattress. Our assault pack backpack has multiple compartments and 2-way zippered closure pockets for added storage options to meet your demands. Ventilated mesh on the back, shoulder mount, chest strap, and waist belt provide breathable and comfortable, making load-carrying very easy. It comes with a flag patch. Magic sticker straps on the front allow any patch attached. Our Military backpack is hydration compatible which could hold a 3L bladder (bladder not included). The straps have elastic bands as holders to fix the bladder hose, it works great when you go out in hot weather. This multipurpose tactical rucksack backpack can be used as a 3-day assault pack molle backpack, bug out bag backpack, range bag, combat backpack, emergency backpack, army backpack, survival backpack, hunting backpack, fishing backpack. Note: If you have any issues with our product, please contact us immediately to get help.