The Fly Racing Women’s Heavyweight Base Layer delivers advanced warmth, comfort, and functionality for riders and outdoor adventurers who need maximum cold-weather performance. Built with extra warm fabric that wicks moisture efficiently and dries quickly, it keeps you warm and dry in demanding conditions. Flat-lock seam construction ensures durability and reduces irritation, while multi-directional stretch with ergonomic panels provides a form-fitting, non-compression fit that moves with your body. Designed with UPF 40+ sun protection and Polygiene® Odor Control Technology, this base layer keeps you protected and fresh through long days in the cold. The Women’s Heavyweight Base Layer pairs easily under winter clothes —ideal for skiing, snowmobiling, riding, or everyday winter wear.