smallbitThe dimensions are such that the bag will fit in the carry-on luggage compartment overhead the seats on an airplane. When not empty the bag folds down flat, this is unrelated to the fitting-in-flight thing. It's just a poorly structured sentence, haha.
" Designed to fit neatly in airline overhead compartments, the Cruz folds down flat when empty for easy storage. "
Maybe Will works like Beetlejuice?