Cool-weather comfort starts from the base. The Thermal Base Layer Long Sleeve Tee is constructed from Polartec® Power Grid fabrics that provide versatile warmth and advanced thermoregulation. The highly breathable, quick dry and moisture-wicking fabric keeps you comfortable whether you are just cruising or hitting those hard intervals. The performance fabric includes odour resistance to help you stay fresh for longer. In addition, the high-stretch bi-component knit paired with contoured side panels move with your body for a premium range of motion.