No noticeable stains, and there are no issues with functionality. Thank you. [Product Overview] Retail Price: ¥17,600 (tax included) *ACE Online Store Model: ace. Hoverlite - Lightweight and slim, with PC storage. A4-compatible, two-compartment backpack ideal for bicycle commuting, model 59005 Color: 01 - Black Size: W28 x H39 x D11 cm Capacity: 12 liters Weight: 590g Material: Nylon x Polyester Features: 2 compartments / A4 size / PC storage (13 inch) / Can be set up on a suitcase handle / Lightweight Notes: This product is a slightly grayish black. Please be aware of this beforehand.