Comfortable Osprey backpack with adjustable back panel. - Brand: Osprey switch 25+5 - Color: Red/Black - Model Name: Aqua Source SWICH25+5 - Features: Adjustable back panel / Hydration system compatible, designed for winter mountain use, with a hose that runs inside the shoulder harness to prevent freezing, and can be used independently. - Capacity: 25+5L / Size M - Back Length: 45~50cm / Weight: 1855g Suggested Retail Price: ¥15,540 *This backpack is designed for backcountry skiing & snowboarding, and snowshoeing. *Back access allows easy access to the interior even with a board attached. *Convenient pockets for avalanche gear storage. *Adjustable back panel ■Activity: Backcountry, snowshoeing, winter mountaineering, etc. ☆I purchased this about 10 years ago and used it for backcountry skiing. It was very convenient and useful because it could hold all the necessary equipment for a day trip in the backcountry, but I rarely go backcountry skiing now, so I am selling it. It shows some signs of use, but the zippers open and close smoothly, and there is no stickiness inside. It is still in good condition and can be used for a long time. Thank you for looking.