I have the first version of the Jambu Spin flats which fit perfectly, an was excited to buy this newer version.  However, this version is much narrower in the toe area/width and the back seems to be higher than the first version causing some rubbing (blisters) in the back of your feet.  Might need to wear socks for these to be comfortable, but that defeats the purpose of them being barefoot type flats. If you have regular width feet than these will probably fit great on you, but if you're like me and have wider feet then it may not feet as comfortable as you would like (especially being barefeet).