Enjoy serious warmth from a midweight layer in the Brooks Notch Thermal Long Sleeve 3.0. The soft, notched interior wicks away sweat while keeping you warm during your winter runs. Key Features: Lightweight warmth: Sustainably-sourced notch thermal material provides warmth and a softer on-body feel while maintaining breathability. Built for cold, dark weather: Reflective hits help improve visibility, while the semi-fitted construction is perfect for layering. Odor resistant: Antimicrobial treatment helps prevent odor-causing bacteria from growing. Ultimate lightweight warmth Reflective trim at the back Odor resistant UPF 50+