The Alpinestars AT Merino Top is designed for adventure riders and outdoor use in cold, demanding conditions. Built with a dual-face 250g construction, it combines a Merino wool lining for natural climate control and next-to-skin comfort with a durable polyester exterior for shape retention, abrasion resistance, and pill-resistant performance. This advanced base layer offers excellent thermal regulation, moisture-wicking performance, and natural odor resistance, making it ideal for extended rides and multi-day wear. Ergonomic raglan sleeves with extended underarm gussets provide unrestricted mobility in the riding position, while flatlock side seams create a smooth, low-profile fit that reduces irritation. Finished with a streamlined collar for a secure fit and easy adjustability, the Alpinestars AT Merino Top is built to perform as a premium cold-weather base layer or standalone piece.