One front compartment holds tissues, keys or headphones. One main compartment holds your travel essentials: like clothes and an umbrella. Two side pockets keep your belongings organized. At only 0.64 pounds, this lightweight backpack is easy to carry and use. Made of thickened waterproof nylon material and high-quality SBS zipper. Durable and not easy to tear. Don't worry about getting wet when it rains during outdoor hiking.