The Espresso Air Jacket is incredibly comfortable on changeable hinge season or mild winter days, being light, breathable and an expert at moisture management, but also warm and weather resistant.It makes use of Castelli's Ristretto Technology, which carefully fine tunes the amount of air allowed in, so that the jacket never gets cold, while efficiently allowing perspiration to escape so that you'll stay dry.The fabric is also highly stretchy, achieving a tailored fit without restricting your freedom of movement, and is treated with a water shedding DWR coating, so that you'll shrug off light rain and be protected from road spray as you ride. The front and back, meanwhile, are totally windproof.Finally, the Ristretto Lite fabric has a cosy, fleecy inner lining, while double-layer cuffs integrate with your gloves and a raw-cut, lie-flat waist stops cold air from entering. All of this will keep you warm, while the jacket's breathability and lack of insulation ensure you won't overheat wh