This is the Arc'teryx Index 15 backpack. Although discontinued, it's a model with enduring popularity. I liked it so much that I bought it in olive and this color, but I often use other backpacks, so I'm selling this one as I haven't used it much. If you were looking for one, how about it? Used infrequently, there are no noticeable scratches or stains, and it's generally clean. ■Size Height: 44cm, Width: 25cm, Depth: 14cm Handle: Approximately 21cm Shoulder strap: Approximately 46-87cm ■Capacity 15L ■Color Dynasty (Orange-red) ■Material Nylon