Castelli Puro 3 Long Sleeve Jersey A no-nonsense winter garment, the Castelli Puro 3 Long Sleeve Jersey is a highly technical piece of kit with understated style and great looks. With Warmer fabric on the body and sleeves, the main function of this top is to keep you warm and comfortable when the mercury drops a little. It's supremely breathable and has a lightweight composition so you can maximise your efforts without overheating. The reflective strip to the front and rear panels will help you be seen by other road users during the hours of darkness, especially handy on the short days of winter. Castelli has incorporated three deep pockets to the rear, with ample storage for all of your ride essentials like nutrition and spares. Keeping the fit snug, the YKK Vislon zip is an excellent addition and can be easily operated with one hand.