This item is perfect for speedhikes and daily use, especially lightweight and high pace, especially in the hiking backpack series. Breathable ergonomic shoulder straps and no-bulk back padding for ultimate comfort In addition to the main compartment that supports hydration system, it also features a large outer mesh pocket and two drop-in chest pockets for convenient storage of energy bars and other essentials. Reflective elements for peace of mind even in the dark. Almost everything is recycled and environmentally friendly.