I bought both these and a pair of zigtechs. I far prefer the zigtechs, but they aren't uncomfortable.

They are cute, but appear wider than most shoes do. The blue is not as vibrant as the photo shows but that's OK.

Sometimes I feel a bit "off balance" when I walk in them-especially on uneven surfaces(like gravel/grass). However it is not that big of an issue.

I do not notice much of a difference in muscle tone, but I haven't used them longterm yet(I am preg and on modified bedrest). Hoping for great results once the baby has arrived and I am ready to get back in shape!

I like them enough for variety, but if I had to decide again, I would pick 2pairs of zig's vs one of each.