Breathable, long-sleeved trail running sweater with gender- and body-specific thermoregulation to keep you warm in cold weather. Sometimes a layer is exactly what you need, even in the dead of winter. Created using a high-performance technical overlay of merino wool and polyamide, the new trail winter long-sleeve postural top lets you train and stay in race condition during the colder months. Our Body-Science team has devoted countless laboratory hours to developing highly precise, gender-specific body mapping. The result is a thermoregulatory quality with the highest precision yet achieved by our brand: in areas that cool quickly and require more warmth, soft wool is placed against the skin on the inside, with polyamide as the outer fabric. In less sensitive areas, the layering of the material is reversed so that it doesn't cause overheating when the pace is quickened. Laser-cut perforations, ventilation panels and 3/4 zip ensure breathability and moisture management, while the studied sleeve design frees up the shoulder for easy movement in all directions. The higher collar adds comfort and protection, along with comfortable thumb loops on the sleeves. Finally, our Spin Control technology helps maintain correct posture. An asymmetrical stripe print and our classic racing logo complete the design for high performance. Put on the trail jersey and forget about winter excuses.