The Aclima FleeceWool Polo w/ Zip Mens is a cozy and warm high-collared shirt, perfect for hiking and outdoor activities in cold weather. This fleece wool top is designed to provide excellent warmth and comfort in chilly conditions. High collar with adjustable zip for temperature control Thumbholes to keep sleeves in place and wrists warm Regular fit for comfortable layering Made from 100% merino wool for natural insulation Technical Features Fiber: 19,5 micron Size and Fit Fit: Regular Materials 100% wool (merino)