This is a very comfy flip-flop, and it doesn't flop as much as some other "flops" that I have had. It definitely runs large. I often wear a size 8, but there is at least one inch sole extending past the end of my toes in this size 8! The thong does tend to irritate the toes just a smidge.  I question whether there will be any noticeable benefit in firming and toning the lower body from wearing this particular shoe; however, it is cute and has a nice cushioned sole. The picture shown for the oyster color leads one to believe that it is a light tan or beige.  It is not.  It is definitely "white."