Arm warmers are popular for cool weather riding, but sometimes the jersey you are placing them under isn't warm enough for your core. When this happens, it's better to ditch the warmers and go with a cool weather long-sleeve jersey such as the Castelli Sfida Fill-zip.
Castelli is known for designing both functional as well as graphically bold kits. The Sfida is no exception. Warmer fabric was used in two versions on the jersey. First, it used the traditional panels on the front to keep your core sheltered from the cold. Second, it used its newer Warmer X-Stretch on the sleeves. This soft, stretchy, warm fabric allows for optimal elbow bend while in riding position so you won't have to tug and pull your sleeves into place. Additionally, a silicone gripper was added at the waist to keep the jersey in place and to seal out cold.
For all of your winter riding essentials, Castelli included three large back pockets. Reflective tabs sewn into rear seams increase low-light visibility for those days when you are so comfy in your Sfida jersey that you end up riding until dusk.
The Castelli Sfida Long Sleeve, Full-zip jersey is available in sizes Small to XXX-Large and in four graphically bold colorways: White/yellow fluo/black, Black/white/grey, Black/white/red, and Black/white/orange.