Ergonomic, robust, and suitable for year-round use, this backpack features Fjällräven's award-winning wooden frame and durable, sturdy materials that will accompany you for many years. The slim profile ensures plenty of freedom of movement, while the well-thought-out compartments keep everything in its place. The front pocket can hold extra layers of clothing or gear. The carrying system is designed to balance heavy loads and can be individually adjusted to the length of your back. G-1000 HeavyDuty Eco S: The "S" stands for smooth. It is slightly lighter and has a finer weave structure, giving it a smoother surface. Made from recycled polyester and organic cotton.