Fleece-lined men’s thermal underwear is a game-changer when it comes to surviving freezing temperatures, and we were excited to put Thermajohn Long Johns to the test. The base layer set boasts a comfortable fit and promises to keep you warm even in the harshest of climates. Our first impression was the softness of the fleece lining, which felt incredibly cozy against the skin. The fabric is also breathable, ensuring that we didn’t overheat after extended wear. We appreciated the tailored cut, which hugged our bodies without restricting movement. The set’s moisture-wicking properties kept us dry during intense activities, making it perfect for outdoor adventures. However, while it performed admirably in cold weather, we found that the thermal long johns were not as effective in extreme below-zero temperatures. Nevertheless, for everyday cold weather use, we highly recommend the Thermajohn Long Johns. They provide both warmth and comfort to tackle winter head-on.