You might want something like this: http://road.cc/content/buyers-guide/214320-best-cycling-overshoes-—-what-look-and-11-great-choices http://road.cc/content/bu

You might want something like this: http://road.cc/content/buyers-guide/214320-best-cycling-overshoes-—-what-look-and-11-great-choices http://road.cc/content/buyers-guide/214320-best-cycling-over... A former buddy of mine would use those for his MTB-Training in Winter. There are options intended for to -20° C IIRC.