I couldn't decide on colours so bought both Black and Bronze. Both are now my favorites, although at the beginning the Bronze pair cut the skin where the toe-post meets the upper leather. After wearing the pair for 3 days, it streched or the footbed sank, so I can wear it without any discomfort.

My usual shoe size is 5.5 to 6 and sandal size is 5 so I ordered 5 and it fits me ok, thouth the Black pair is somewhat loose because it uses the soft leather for the strap, but is still very comfortable so I wear at home all day.

They reduce shock for my knees and back and it helps me heaps as I carry and chase after 2 little boys all day. I'm addicted to Fitflops and bought Electra and Pietra as well, both of them are also very comfortable and fashionable. Pietra series are made for narrow-width feet and it fits me better than other Fitflops.

Regarding the toning effect, I haven't measure the differences but I sometimes feel that my calves are working to keep balance, so it's probably working. Even if it wasn't I will still continue to wear Fitflops for the comfort that no other shoes or sandals have ever given me!