If you're serious about Crossfit, then you should have a shoe specifically for Crossfit. This is that shoe. Very light, very durable. I have used them 3-4 times per week since purchasing, and they have held up perfectly. More lateral support than you will find in other minimalist shoes, but not a lot overall. They give instant support/reaction for Olympic style lifting, which puts more strain on the calf. My calves were sore at first because I used to lift in running shoes that were built for cushioning. I don't get sore anymore, so my calves must've strengthened. I love the murdered out all black look for social gatherings, but I wouldn't recommend a lot of walking in them. Overall a great gym shoe, and can also work its way into your rotation for social gatherings for medium to short standing/walking.