Well...The current version pretty much has the same dimensions as my CrateWorks box that holds my large LHT 700c and both my Big racks (and my stove and fuel bottle). Maybe it's all that padding that Is taking up space. My box has a large main compartment with tie down straps and no padding. Then there is a separator that goes on top of the frame, etc. On top of the separator go the wheels. I have a LBS pack my bike. I know they add various types of foam protection and bubble wrap.