The CamelBak Maximum Gear HAWG Cordura Hydration Pack Backpack in Black is a large-sized backpack made of heavy-duty 500D Cordura fabric and nylon, featuring a zip closure and adjustable padded straps. It has a capacity of 20 liters and is designed for unisex adults who would be using it for activities such as hiking, tactical ops, and military missions. The pack is water-resistant, making it suitable for all season use. With features like a multifunction compartment and a logo accent, this hydration pack is ideal for outdoor or tactical enthusiasts looking for a reliable and durable backpack for their activities.