I've been running in asics for over a decade, but recently started spending more time taking classes at the gym. My running shoes were not providing enough lateral support and causing foot pain. Most of the stores in my area don't offer much for cross training, and no asics. After doing some research I decided to give these a chance. First, let me say they are really cute, I would have kept them for casual wear if they didn't perform. I was a little concerned that they wouldn't have enough cushion but no problems so far. I've had them for over a month, and probably gone to twelve kick boxing/Zumba classes, no break in needed and great support, no foot pain. They are so light, and the mesh is great, no sweaty feet. When I get home from a long run I can't wait to peal off my regular running asics (nimbus that I love too) but these are to light I have to remind myself to remove them. I have only used these on the tread mill and my max distance was only three miles but no problems there. Not sure how they would preform on pavement for more distance. If you are used to running shoes you may feel like there is less arch support? I have pretty average arches and didn't find this a problem. There is less traction, so a little slick when doing lunges etc., but great for Zumba. Overall I couldn't be more pleased with these shoes!