The Castelli Pro Thermal Mid Jersey is a minimalist, close-cut aero jersey that nonetheless provides a bit of warmth when there's a nip in the air.Constructed from mid-weight Warmer X-Stretch brushed fabric, it is soft and cosy against the skin, but includes just enough elastane to achieve an effective, comfortable race fit. It goes nicely under a vest if you're feeling the chill and has three drop pockets to store that vest in.Add in a smooth-running zipper and a reflective strip at the back, and you have a light, aerodynamic short sleeve jersey with a bit more warmth than is typical, boasting the features you need and none that you don't.Features:Designed for the pros and a favourite among themA minimalist jersey for when it's time for short sleeves but remains chillyMade from warm, lightly, stretchy mid-weight Warmer X-Stretch brushed fabricRace cut, it offers a close fit without being tightDrop pocket construction aids fit and pocket accessibilityWith YKK® Vislon® zipper to aid ventingReflective vertical stripe on centre pocketWeighs 188g (medium size)For use at temperatures from 15-20°C, 59-68°F