Castelli women's diagonal jerseythe striking print is what first catches the eye, but the castelli women's diagonal jersey is more than it's print'. '.strtoupper('t')his cycling thermal top is fabulous for sealing in warmth when cooler weather conditions arrive'. '.strtoupper('t')hanks to the fleece backed warmer fabric, the women's diagonal jersey ensures you'll enjoy excellent insulation from the cold'. '.strtoupper('a')nd if you pick up the pace or alternatively the sun warms you up, the excellent breathability means you're not overwhelmed with sweat either'. '.strtoupper('o')n milder days, it's great with just a lightweight base layer underneath or come colder conditions add a heavier winter weight base for extra warmth and should it be damp pop on a rain jacket over the top'. '.strtoupper('i')n order to get a streamlined and smooth fit, the sides of the jersey are made with warmer x stretch'. '.strtoupper('t')his retains warmth but offers extra flexibility too, making it easy to move and manoeuvre on your bike'. '.strtoupper('t')alking of the fit, the dropped pocket design provides a better fit at the waist and prevents sagging when you have the 3 rear pockets loaded up.should you feel too warm, the smooth sliding ykkreg vislonreg zipper makes it easy to regulate ventilation'. '.strtoupper('t')he back pockets feature reflective trims, enhancing your visibility when cycling in darkness and a waist gripper keeps the fit snug and prevents movement when you're pushing on the pedals'. '.strtoupper('t')his is a jersey that keeps it simple'. '.strtoupper('n')o fuss'. '.strtoupper('j')ust great performance when you're cycling in cool weather.featuresmaterials 95% polyester, 5% elastanemaximum warmth from printable version of warmer polyester fabric with brushed fleece inner layerykkreg vislonreg zipper with a protective tab at the top3 external rear pocketsreflective pipingsuggested temperature range 12 to 18 degrees cbuy castelli clothing from chain reaction cycles, the world's largest online bike store.