Specifications: Gender: Unisex (Men,Women) Occasion: Hiking, Camping, Hunting, Fishing, Trekking, Traveling, Climbing and other outdoor activity. Material: 600D oxford polyester Capacity: 25-40L Size: 30*20*43cm / 11.8*7.8*17 inches Weight: 780g / 1.72 pounds MATERIAL- 25 Liters. This military backpack is made of 600D Water resistant Polyester. HYDRATION COMPARTMENT- This assault pack with hydration compartment and can hold a 2 Liter bladder, the tube is fed through the top of the bag near grab handle. MOLLE WEBBING- This rucksack can hang on small items, or for attaching additional pouches or gear. Backpack also has 4 molle hooks underneath to strap a bedroll, tent or anything else. Side pouch fits water bottle. DURABLE & MULTIFUNCTIONAL- This molle backpack with chest straps to cope with the weight so that it's well used as a 2 day assault pack,bug out bag,survival backpack,army backpack,trekking backpack or day pack. Suits for Hiking,Camping,Trekking,Traveling,School or daily use. This backpack is also a good choice as a gift!