The Sidi Men's Hydro GTX Cold Weather Shoes free you from the rollers during the winter and let you train in the cold. Built around a Gore Tex bootie, their Norica and Nylon uppers keep cold air out while neoprene cuffs seal out moisture. The Hydro GTX Cold Weather shoes use light insulation to keep you warm, and because Gore Tex has come a long way since the '70s, these shoes won't suffocate your feet and drown them in sweat. Sidi built the Hydro GTX shoes to fit slightly larger than its other shoes so that you can wear thicker socks on your cold weather rides. Hook and loop closures make it easy to adjust your fit, and replaceable heel pads deliver traction at icy stops.