While your competition is training inside, keep pushing your limits when the temperatures are less than ideal for riding outside with the Castelli Unlimited Perfetto RoS 2 Jacket. Its GORE-TEX INFINIUM WINDSTOPPER fabrics block out wind and rain, keeping you warm and dry no matter what the conditions. We like it for its versatility, allowing for use in mild to below-freezing temperatures with the addition of either a light or thermal baselayer.