The EQUIPE Winter Skin Layer P1 runs a thicker knit across the entire front panel, not just the chest, built specifically for racing and training in freezing temperatures. ASSOS developed it as a dedicated winter solution for WorldTour racing, where a Circular Seamless structure keeps the back lighter and more breathable while the front does the real work against the cold. Dryarn material carries the moisture and odor control improvements over the standard Winter Skin Layer, so warmth doesn't come at the cost of staying dry against the skin. What Our Gearhead(R) Experts Are Saying:"I rode through a genuinely freezing morning start and never felt that first-mile chill across my chest that usually takes miles to shake. The whole front panel holding heat, not just a patch of it, is the difference."