I have high arches and these shoes offer fantastic support. I've been wearing them through my second and third trimester of pregnancy and they are so comfortable for feet that are bearing a little to a lot of extra weight.  I also really appreciate that they aren't weird looking.  I don't really buy that they are making me all that more fit, but I do feel like other muscles are being used, though they may result just from them being more supportive than the shoes I had previously.  Great shoes, I'd recommend them to anyone.