During the spring and fall riding seasons, the weather changes with no notice during, and that is why we choose to wear the versatile Castelli Perfetto RoS 2 Wind Short-Sleeve Jersey. Designed for use in rain or shine, this jersey acts as a mixture of a warm vest with sleeves and a lightweight summer jersey, making it a versatile option for our cycling wardrobe. Its GORE-TEX INFINIUM WINDSTOPPER 203 Stretch fabric construction provides exceptional wind protection, while also ensuring that we don't get too hot during our efforts.