Bseash 40L Large Capacity Durable and Waterproof Climbing Backpack. This 40L hiking backpack is specially designed for traveling enthusiasts, and it doesn't have a frame. With the ergonomic design, this backpack gives you more comfortable feeling. The design of dirty / wet separate and compartments interworking praised by many people, the external hanging system has expanded the capacity of the backpack once again. No fear of rain and wind with the rain cover. Made of high-quality and safe material---900D nylon, it is durable for long-time use. It will surely contribute to your fantastic outdoor experience. material features: made of durable 900D nylon material, Stain Resistant, Tear Resistant, Dirt-proof, waterproof. lightweight-- only 0.76kg, reducing the backpack loading weight so that you can carry more other items. rain cover include: Rain cover pouch on the bottom, prevent the water and dust into the backpack, useful tool on the rainy day. The interior is divided into three sections, each with his unique collection function. The inner compartment, near the back, can hold your computer, which is better protected from damage, and there is also a hose outlet for the design water bag, which makes it easy to drink. In the middle is a large spacious section that can hold a lot of on-the-go items, such as clothes, books, hats, etc. The exterior is also designed with compartments for small items such as mobile phones, chargers, keys, small notebooks etc.