First of all I would like to say that the way they were delivered was not acceptable. The first order was lost in the mail. I think they will be ok. 2. From all the other reviews was correct that your feet will be sweaty but apart from the toe box it is a little tight which is due to my mutant big toenails. Everything else is fine and as for the grip, I've only really tested it on sidewalk steel bars, my last shoes were like skates on it but they stick to it, they seem to stick to concrete very well too.