The CamelBak ThermoBak 3L Hydration Pack is a medium-sized black backpack designed for hiking and camping activities. It features a single main compartment with a 3L capacity, making it perfect for staying hydrated during long outdoor adventures. The pack is made with durable Cordura material and includes one pillow pocket for added convenience. Ideal for unisex adults, this military tactical backpack is a reliable choice for anyone looking to stay hydrated and organized while exploring the great outdoors.