To ride in the heart of winter when temperatures are freezing, the Flanders Warm Neck Warmer base layer is ideal for staying warm throughout your outing. Designed by Castelli, this base layer for men is very warm and allows you to face the coldest winter temperatures. The collar of the base layer can be pulled up and used as a neck warmer to provide a high level of protection against the cold. Look no further; for winter riding, the Flanders Warm Neck Warmers is the ideal base layer.