Purchased in 2021 and used for day hiking. Selling due to replacement. The left and right shoulder harness pockets are stiff with blue corrosion and cannot be opened or closed. In addition, there are some stains from use. There are no tears or holes. It was a very easy-to-use backpack, so I would like to sell it to someone who can take care of it. Please understand the above and consider purchasing. Manufacturer: ARC'TERYX Item Name: Aerios 15 Backpack Color: Gray Model Number: 27335 Pockets/Storage: 7 external pockets / 1 internal pocket / Storage Volume: 15 liters Item Dimensions (D x W x H): 27 x 38.1 x 19 cm Item Weight: 580 grams About this product: Hiking and Trekking - Technical hiking, trekking, and a durable, protective design for remote areas and various conditions. Daypack - Streamlined and functional pack for ease of use and light weight. Activity-specific design. Description: Go further because it's light, easy to carry, and allows for quick and comfortable movement. This is the freedom that the Aerios 15 offers. It has a storage capacity of 15 liters. It comfortably stores items needed for a full day's activity, such as water, snacks, and layering wear. The shoulder straps and side pockets make it easy to access the contents and carry them safely. The lightweight fabric has a liquid crystal polymer ripstop grid for excellent durability. The breathable Aerofoam pad on the back panel and the removable frame sheet provide convenient and comfortable carrying. - Bungee compression system and webbing daisy chain on the front - Main compartment compatible with bladder reservoir clips - Two trekking pole carrying attachments - Aerofoam pack panel with high breathability and abrasion-resistant frame sheet for improved carrying comfort - Inner security pocket with key clip - Two zippered pockets accessible from the sides - Shoulder harness with two zippered pockets and excellent breathability, compatible with soft flasks