Flex Comfort Thermal Long Johns

You want your thermal underwear to add all-important warmth, without feeling bulky or constrictive. So here's our flex performance jersey, light enough to wear as a smooth base layer under your clothing with lots of stretch for total flexibility. While you're moving, moisture wicking technology pulls sweat away from your skin to keep you dry, and built in temperature regulation prevents overheating. | Lands' End Men's Flex Comfort Thermal Long Johns in Black | Size: Medium