This is a Chums sweat nylon backpack. It's from about 8 years ago, and I used it for about 2 years. I mainly used it indoors or for trips to and from indoors, so I think it's relatively clean, in my personal opinion. There's the typical wear and tear of a sweatshirt, but the nylon lining is still clean with no visible stains. The outer fabric is gray and black, and the inner fabric is purple, a simple yet easy-to-use color scheme that's very cute. Please understand that this is a used item. #koyukoyuused