I ordered a wide, but it fits like a medium.  The shoe is very lightweight and my legs don't tire as fast. It is snug enough to keep from sliding around.  I really like the bungee-cord laces; no laces to tie - they have stretch so you can get the shoe on easily, and I have managed to do it without use of my hands.  I find I have to wear a smooth lightweight sock rather than a winter sock because of the glove-like fit.  I like this shoe for around the house, but have worn it outside.  It is not as bulky looking as most athletic shoes.