Developed alongside elite riders, the Women’s Deep Winter Base Layer is built to perform through the coldest months of the year. Whether you're logging base miles or pushing hard through frosty mornings, this is your go-to foundation for warmth without excess weight. Engineered with Polartec®’s most advanced fabric technologies, it combines targeted insulation and breathability to keep you comfortable as conditions change. Across the core and upper back, Polartec® Alpha™ provides active thermal regulation, keeping you warm without overheating during varied intensity rides. Polartec® Power Grid™ is strategically placed along the arms and lower back. This innovative fabric features a geometric grid structure that traps heat close to the body while promoting airflow to wick moisture away efficiently. The result? A lightweight yet powerful base layer that supports high-output winter training while maintaining a dry, comfortable feel throughout your ride.
