This is an ultralight model designed for maximum weight reduction. It's very lightweight, making it suitable not only for those aiming for high-pace mountain climbing like speed hiking, but also for those who want to lighten their load and reduce the burden on their body. The shoulder harness and back panel use breathable 3D mesh to prevent stuffiness and provide a comfortable carrying experience. It's a compact, packable design that can also be used as a sub-bag when traveling. The entire pack can be compactly stored in an internal pocket. It has a front pocket and side pockets for storing small items and water bottles. Please understand that this is a used item. There are no noticeable scratches or stains on the product. ・Brand: mont-bell ・Weight: 360 g ・Capacity: 20 L ・Size: 51 x 26 x 16.5 cm ・Storage Size: 20 x 20 x 8.5 cm ・Color: Moss Green / Gray