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Men's Base Layer Tops
Tackle cold weather with men's base layer tops by Columbia. Our varied selection of men's long underwear tops features high-performance styles that keep you prepared for dipping temperatures, no matter the activity. Whether you're hunting, hiking, or running, these fitted styles layer perfectly under clothing to provide ultimate warmth and comfort outdoors. Our men's long underwear shirts are made from lightweight or mid-weight fabric that's durable and versatile. Thermal-reflective jersey helps conserve heat while wicking away moisture so you stay dry. Flatlocked seams eliminate chafing and irritation, and 4-way stretch allows you maximum mobility. Wear these long underwear shirts for men under apparel or by themselves, making them great for year-round wear. When you want unparalleled quality and comfort for outdoor adventures, trust Columbia to deliver the best. We offer a wide range of sizes so you can get the most comfortable fit.