The Deep Winter Base Layer is our warmest base layer, developed with and chosen by pro riders when training in the off-season. Using advanced Polartec® fabric technology, the base layer optimises performance efficiency by delivering thermal protection and breathability while keeping weight to a minimum. Polartec® Power Grid™ is strategically placed across the arms and lower back. The fabric uses a patented geometric grid construction which traps warm air to boost warmth while creating open air channels for effective moisture evaporation and improved breathability. Polartec® Alpha™ is used across the core and upper back for supreme targeted insulation. Engineered for consistent warmth, the fabric ensures your temperature is regulated when riding at varying speed – whether you’re tackling a hard climb or descending at pace.
