I love the concept of these! However I will say there are some consistency issues. We got red and pink shocks and the pink pairs seem to fit more snuggly than the red, even though they are the same size. Some of the socks also seem thicker than others, maybe a switch in the sock supplier or something.
But all in all, we love having an option for flexible footwear when we go to friends and family's homes that isn't stiff or bulky and allows for free and flexible movement.