What Our Gearhead(R) Experts Are Saying:"This pullover is perfect for high-energy activities in cool weather. The breathable insulation keeps me comfortable without overheating, and the slim fit works great as a layering piece or on its own."The Men's Nano-Air Ultralight Pullover is built for high-output adventures in cool conditions. Featuring Polartec(R) Power Grid(TM) fleece, this lightweight midlayer delivers breathable warmth and exceptional mobility for climbers, hikers, and trail runners. Its slim fit ensures easy layering, while the stretch construction enhances comfort during dynamic activities. The DWR-treated recycled polyester shell offers light water and wind resistance, while wicking panels on the lower arms manage moisture during intense efforts. Sustainably made with recycled materials in a Fair Trade Certified(TM) factory, this pullover balances performance and eco-conscious design for demanding explorers.