
The Assos Ultraz Winter LS Skin Layer is the ultimate defensive foundation for cycling in sub-zero and deep winter conditions. This long-sleeve base layer uses a high-density wool-blend knit to provide maximum thermal retention and wind protection when the mercury drops. Its robust construction creates a thick buffer of warm air against the body while utilizing a complex moisture-wicking system to ensure that sweat does not turn into a chill during descents. Designed with a tall collar and seamless transition points, it integrates perfectly with heavy winter jackets to eliminate cold spots. This specialized garment is engineered specifically for men to provide a supportive, heat-trapping fit during the most demanding rides of the year.