This is my fist day wearing them, and all I can say is wow. They definitely have heft, but not bulk. For a boot this big they are remarkably flexible and allow a full range of motion. Bombproof construction. They are hot, but my feet stay dry despite it. As long as they hold up, this may very well be the best boot I've ever worn. Well worth the money. The FREE shipping was freaky fast as well, I ordered them on Sunday and I am wearing them on Wednesday. I am definitely one happy camper!