Used twice when going out. There are no noticeable stains, so I am selling it because I have no opportunity to use it. Outer material: Oxford and nylon Storage size: 60L Type of fastener: Plastic buckle [Large capacity 60L] This mountaineering backpack has pockets in various places to make your mountain trip comfortable, and it also has a rain cover and hydration function. The capacity is 60 liters, making it ideal not only for mountaineering but also for long-term tent stays and tent stays in all four seasons. Length 65cm x width 35cm x depth 25cm. Weight: 1KG. [Fit design] Four points that enhance the fit are gathered. The hip belt supports 80% of the weight, and the shoulder straps support 20% of the weight on the shoulders, allowing you to walk stably without getting tired for a long time. By tightening the load lifter straps, you can reduce the burden on your shoulders and prevent the backpack from swaying, allowing you to walk stably. You can adjust the position of the chest strap up and down to further enhance the fit. [Load capacity 30KG] This backpack is made with a strong construction that can withstand up to 30 kg. The fabric uses high-quality Oxford and nylon, which is not only durable and long-lasting, but also has functions such as preventing tearing and scratches, and also has waterproof performance, preventing the infiltration of light rain. (*It is water-repellent, but not completely waterproof.) [Excellent breathability] The back pad and shoulder cushions designed based on ergonomics have an exquisite thickness to reduce the pressure on the shoulders. The back pad has a mesh cushion structure with excellent breathability, making it comfortable to wear even for long periods of time. In addition, it comes with an emergency chest strap whistle, which is useful for asking for help in an emergency. [Multi-purpose] It can be used for outdoor activities such as mountaineering, trekking, hiking, camping, cycling, and overseas travel, as well as school events such as excursions, training camps, school trips, and forest schools. It is also a great backpack for marine goods such as swimming, summer sports, and fishing! It is also convenient for putting disaster prevention goods as a disaster prevention bag in case of a disaster. [Reliable 12-month warranty] In case of initial defects, we can exchange or refund.