What Do You Call a Backpack That's Also a Chair? Chairpack? Backchair? Chairback? (No.)Casey Chan8/01/11 5:40pm41EditInvite manuallyPromoteDismissUndismissHideOr is it a Backchair? Packchair? Who knows! This Keen Springer Backseat Pack handles both backpack and chair responsibilities but unlike others in the past, it doesn't look completely bat shit crazy. And it keeps your bum clean!