Castelli Women’s Cold Days 2nd Layer JerseyThe Castelli Women’s Cold Days 2nd Layer Jersey sits underneath your winter jacket and over your quick-wicking base layer, creating incredible warmth and comfort when cycling in the freezing cold.Made from Polartec® Alpha®, the Women’s Cold Days 2nd Layer Jersey is a cold-weather insulator that is designed to perfectly complement your usual base layer. Incredibly lightweight, soft and yet offering superb insulation against the cold, this top won’t weigh you down or get in the way but still retains incredible levels of warmth. Details have also been carefully designed for mid-layer comfort. A half-zip allows you to vent but lessens bulk over the torso. It’s also slightly off-centre, ensuring it doesn’t interfere with the zips on your outer jacket or jersey. The high neck offers a warm seal against the cold while the close fit lets you tuck it into your tights or leave it outside. Features:Materials: 100% PolyesterPolartec® Alpha® 90 fabric high-loft active insulation madefrom recycled PETMaximum breathabilityAsymmetrical zipHigh CollarWeight: 90g (S)Suggested Temperature range: -8 to 5 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World’s Largest Online Bike Store.