Who said you can't have a performance fitting jersey in the winter? The Assos iJ.tiburu.4 jersey combines winter-warmth with a snug racing fit, and is sure to be your most comfortable jersey. The front, shoulders and arms employ Assos' warm and stretchy RX fabric with a tight-knit outer surface and thick fleece lining. Back and underarms feature a 3D-textured micro fleece to retain warmth, but not moisture. Thoughtful details add up to make a big difference, including the double-layered, anatomically shaped collar, a full-length zipper with oversized zipper-pull, three rear pockets and a smaller zipped security pocket with media port.