Castelli Pro Thermal Mid Short Sleeve JerseyIf you want to wear short sleeves even on a chilly day of cycling, the Castelli Pro Thermal Mid Short Sleeve Jersey, with its lightly thermal fabric, makes that possible. Come the transitional seasons of the year and while temperatures aren’t freezing, the lightweight warmth of the Pro Thermal Mid Short Sleeve Jersey offers just enough warmth to keep off a chill. The secret is in the use of mid-weight Warmer X-Stretch brushed fabric. The fleece inner provides excellent insulation against cool weather but it’s a touch lighter than a regular thermal material, ensuring better breathability and heat regulation. Not only warm and breathable, the X-Stretch, as the name suggests, has an extra amount of stretch, giving the jersey a snug fit. This combines with a race fit to deliver streamlined performance tailored for fast riding. Pair it with a gilet and arm warmers and you can use it across a surprisingly wide range of conditions. The functional focus of the jersey continues into the details. A smooth YKK® Vislon® zipper can be used with one hand, making controlling ventilation simple. The drop-pocket construction allows you to load up and yet the jersey remains in a secure and stable position. There’s also a reflective stripe on the centre pocket, enhancing visibility after dark.Features:Materials: 80% Polyester, 20% ElastaneMid-weight Warmer X-Stretch brushed fabricIdeal for cool conditions, with or without a vestRace cut with highly elastic fabric provides close-to-body fit without feeling tightDrop-pocket construction for better fit around waist and better pocket positionEasy-sliding YKK® Vislon® zipperEmbossed line across the chestReflective vertical stripe on centre pocketWeight: 188gSuggested Temperature range: 15 to 20 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World’s Largest Online Bike Store.