I got a 166cm bag and it was the perfect size for my 161 board. There was plenty of room for my boots, jacket, pants, backpack and everything else I needed for a long weekend trip, all without having to remove my bindings. Since the bag is large enough to fit all my gear, it means I only have to check this one bag. The wheels are a necessity if you're going to be doing any amount of air travel, because hauling something like that through an airport would be a real pain. My only wish is that the bag had more of a backbone or spine so that it's still functional without a board in it. As it is now, the bag is difficult to roll around without a board to provide the necessary structure.