My wife has had one of these for years and loved it.  So I ordered one--and returned it immediately.  If you have big feet, there's no fitting a pair of sneakers in it.  I wear size 12's, and they stuck out about 3 inches when I tried to fit them in.  They might go in if I ignored the parcel shelf down the middle and just stuffed them in vertically--but then they take up the whole gym bag.  And I'm not talking basketball shoes here, just regular New Balance sneakers.  My guess is that if you wear larger than a men's size 9, you'll have trouble.  I also echo another reviewer's comment that the main compartment needs a double zipper, it is awkward to try to get the one zipper around the bottom of the bag.