On longer trips, it's nice to have a smaller bag in addition to the one you've travelled with, for shorter, day-long expeditions into the city or the woods. This collapsible bag offers all the space you need for your afternoon explorations, and folds down into a built-in case that fits in palm of your hand. That way, you don't have to take up all the space in your first bag with this one. Lightweight, water-proof, and finished with adjustable shoulder straps, it's the accessory your vacations have been waiting for.