I've been wearing Chameleons for years and loved them but they screwed this new one up. The upper part of the opening at the heel is too rigid and these shoes are actually pretty difficult to get on compared to my older Chameleons. The lacing and lace binder are different too and don't seem to be as nice as the older ones. They should definitely fix whatever it is they put in the rear of the shoe to make it so firm. I'll still wear my old ones over these most of the time.