This is a MAMMUT backpack. It's a great backpack for mountain climbing and outdoor activities. There are some scuffs and stains from use, but it's still in good condition. Please refer to the photos for detailed specifications of this backpack. There are no noticeable scratches or stains on the exterior, but the only issue is the deterioration and dirt on the rubber parts containing the strings and the inner pocket, as shown in photos 7-9. Please forgive any oversights. [Brand] MAMMUT [Color] Blue系 (Blue-based) Thank you.