I've wearing a pair of men's Sidi Mega Dominators (mega = wide) in size 43! They are the only cycling shoe I found to fit my ManFeet. They are also a very well-made shoe, I like the adjustable clicky third buckle. The only negative (besides the hefty pricetag) that I can speculate is that these might not vent very well but for my temperate northwest climate they're just fine and dandy.