I've owned several pair of insulated Maine Hunting shoes (rubber bottom boots with leather uppers) from LLBeans in Maine.
http://www.llbean.com/llb/shop/33549?feat=513858-GN3&page=men-s-l-l-bean-boots-8-thinsulate
They have a lifetime warranty... 100% lifetime... I had my first pair overhauled for free after some 15 years. They are lace up, and they aren't as good as these "Mucks" have been described, but they worked fine for me hunting up in Maine in all weather conditions. My feet sweat basically any time they have anything on them, even flip flops, so insulated hunting boots in very cold weather with thick insulating socks did cause me rather wet feet.
http://www.llbean.com/llb/shop/33549?feat=513858-GN3&page=men-s-l-l-bean-boots-8-thinsulate
They have a lifetime warranty... 100% lifetime... I had my first pair overhauled for free after some 15 years. They are lace up, and they aren't as good as these "Mucks" have been described, but they worked fine for me hunting up in Maine in all weather conditions. My feet sweat basically any time they have anything on them, even flip flops, so insulated hunting boots in very cold weather with thick insulating socks did cause me rather wet feet.