Used a few times, so it's mostly unused. There are no noticeable scratches or stains, but it looks like the color has faded slightly due to age. The original strap is missing and cannot be found. There isn't one. There's no particular problem using it as a backpack, but if you want to use it as a shoulder bag, please purchase an aftermarket strap and attach it. Size: Height 55cm X Width 35cm X Depth 17cm *Please forgive any slight errors as this is amateur measurement. Color: Black I think it can be carried on board on major airlines, so it would be good for travel. Size...30-45L