I ordered these a few months ago after discovering that I couldn't train barefoot like I did when I was in my teens and 20s. These shoes give me the ankle support I need to prevent achilles tendonitis when doing plyometric training, martial arts, and also give me the mobility I need for heavy bag work and shadowboxing. I train on a 2 inch thick gym mat because some joint issues, and sometimes when I'm just warming up and the mat is dry I find the outsole catching a little but once the mat's slick with sweat, it's not a problem anymore. I have had no further achilles pain since starting to use these for ALL of my training, including weights/calisthenics. I wear a size 10 to 10.5 usually, and I wear thin no show socks with these and they fit perfectly, despite my incredibly flat feet which get flatter and wider when I stand up. At the end of a long workout when my feet are a little swollen, I'm still perfectly comfortable in these shoes. I do wish there were some other color choices (maybe some red accents?), because I'd love to have another pair to wear to work!