Lake MXZ 303X Wide Winter Cycling Shoes. It's no secret that Lake makes some of the best winter cycling shoes out there, but now they've seriously upped their game. The Lake MXZ 303X winter cycling shoe takes it to a whole new level with Pittards WR100 leather, Thinsulate insulation, Thermosol insoles, and a whole lot more. And speaking of more, this version of the MXZ 303 is the wide edition for those needing some extra width in their cycling shoes. If you live somewhere where snow, miserable temperatures and nasty winds are the norm November March, then you definitely need these shoes.