I didn't buy these for the bottom/leg toning claims; I am sure that three or four hours of karate a week do more for my thighs than special soles can. I bought them because I have very high foot arches and as a consequence my feet, knees and back often ache after a long day. The FitFlop boots are the most comfortable shoes/boots I have ever worn, I haven't had any backache or foot/knee pain since I've been wearing them.
The leather Short Superboot looks a bit like a biker boot. It's not a very feminine style, but I quite like that. I like them best with skinny jeans or tights and a casual skirt/dress; I've worn them underneath bootcut trousers, and they do look a bit orthopaedic worn that way.
www.fitflop.com, which still has them available at 30% off. Even with the discount they aren't particularly inexpensive at £87.50, but I would recommend them for anyone who walks long distances or is on their feet for prolonged periods.