The jersey is specifically designed for racing and high intensity training in mild Winter and cold weather (5°C-15°C) and bridges the gap between lightweight and thermal insulation.The jersey is entirely made of a fabric with windproof and water repellency treatment. It is windproof and lightweight to prevent the rider from overheating when temperatures get warmer.The jacket features a highly engineered, race oriented cut which is very comfortable .At the same time, we bonded the hem to make sure they lay flat to keep the cold air and rains out, making warm enough while riding.