I also have a 10.5 x EE foot and Muck boots are the only rubber boot thats fits me. As for sweating feet, any rubber insulated boot will cause your feet to sweat if you walk very far. Remember COTTON KILLS, wear polypro socks against your feet then wool. My Mucks are insulated for cold wet weather use and I will buy another pair if these ever wear out.
Oleman
Baker, La.