Diesel backpack. It easily fits A4 size items, and also fits a laptop, so I used it for business. I'm selling it to declutter as I no longer use it. There's a slight scuff mark, but it's hardly noticeable. The color variation is part of the design, and I believe the surface is sheepskin or something similar. The inside is clean, but this is my personal opinion and may vary. Please refrain from purchasing if you are sensitive to used items, as this is a pre-owned item.