The features that make so many pieces of bike gear so great in the summer can work against you in the winter: ventilation that was so welcome on a hot humid day is less than ideal when it's freezing out. Pearl Izumi P.R.O. AmFIB Toe Covers block the wind and rain from attacking your toes, one of the first areas to suffer in the cold. Put these on at Halloween and take them off on St. Patrick's Day!