My girlfriend got me into winter biking and I love it, but my tootsies turn into a block of ice. I tried on her Lake Winter boots that she recently bought on Amazon (Nashbar)- size 9 mens. She's a size 9 women's. They fit me fine. I think 43 is the same as size 9 (on the box pictured), so I'd like to buy your boots if you haven't already sold them!