When they say XL, they mean it.  I use it to store and transport my Coleman Exponent Fastback Inflatable Kayak.  It weighs just under 30 lbs. and expands to 10' x 10" when inflated. It fits in there folded once over, so needless to say it's not a small bag. I originally bought it to carry 4 10' mesh shade canopy walls, but it ended up being way bigger than I had expected.  If you're a camper, a hockey player, or a kayaker with a lot of gear, you should have no trouble finding a good use for it.