SIMPLY PUT, THE humble thermal underwear will embolden you to brave the weather. More specifically, the thermal shirt. Unlike your bulky sweaters, the best thermal shirts for men offer a streamlined look with lightweight insulation and moisture-wicking properties, making them ideal for layering in colder temperatures and during outdoor pursuits. Beyond warmth, these types of undershirts focus on breathability, stretch, and versatility, allowing for greater mobility without overheating.

To get through the winter months, our fashion team has been testing a slew of the best thermal shirts for men that work as base layers or stand alone. Some even double as compression shirts for performance as well as henley tops for casual wear. Then there are stylish options made with soft, flexible waffle knit textures that look great underneath a shacket or puffer jacket. Whether you’re going for a hike, running errands, or lounging around like a couch potato, the best thermal shirts for men are a reliable foundation for your cozy wardrobe—and your ultimate secret weapon for the season.

It's highly breathable, moisture-wicking, odor-resistant, and naturally insulating. Ideal for both mild and cold weather. It also feels softer than traditional wool, making it a comfortable option for those with sensitive skin.