I'm selling a foldable backpack I bought from Workman. It can be carried on your back, by hand, or attached to a carry-on bag. The capacity is unknown, but it can hold about two 2L PET bottles. I'm selling it because I've only had the chance to use it a few times. - Brand: FieldCore - Color: Black - Design: Stowable bag Please forgive any minor scratches as this is a used item. Thank you for looking.