3 season wind protectionwhen the weather is chilly and blustery but not cold and fitness is still good enough to up the pace endura39s windchill ii jacket is likely to be your perfect riding companion with it39s windproof front and sleeves you get a cosy warm feel while the fleecy roubaix fabric to the rear and sides traps warmth but also increases breathability allowing build up of sweat to escape minimising any windchill should the pace really hot up then extra ventilation is availabl