After reviewing several products similar to this, I chose this particular half sole footwear.  I have worn them twice, and so far they are comfortable and appear to be sturdy.  I wear a size 8.5/Women shoe and I ordered a Large; they fit great as a whole, but the opening for the big toe is a little bit tighter than what I find comfortable.  The item didn't have any instructions for altering the toe openings like some other brands do, so I'm hoping it will stretch out a little with wear.  This particular brand does have a spectacular cross between traction and glide though, allowing you to turn without feeling like you are going to lose your footing with everything else.