I have for sale a pair of size 43 1/3 Adidas Merckx Competition shoes. They are marked US 9. I Normally wear a 9.5-10 depending upon the width and these fit like a 9.5. My modern Sidi size is a 43.5. These have mesh and leather uppers and hard molded soles with red screw-on cleats. I do not believe that they are compatible with modern pedal systems. They have the 3 Adidas Stripes on the outboard side of the shoe which are white with a red accent. These are INB and never worn (other than to try them on for fit). Very nice classic shoes in a more common size. I bought them and in the meantime I scored a pair of Detto's that I like more. I paid $140 for these but am willing to let them go for $100 shipped CONUS.