men's thermal set, using high-quality fabrics, skin-friendly and elasticity, breathable and light, healthy, moisture wicking. underwear which brings you the warmth of the whole winter. At home, it can be used as a pajamas. When exercising outdoors, it can be used as a base layer under the jacket. It's light weight and does not have a sense of restraint when exercising. 1.Material is wonderfully soft and doesn't start to itch as much as "conventional" long underwear is prone to do. keep you warm in the cold weather and absolutely Non-Bulky. 2.Breathable:The mens long john with 2 way air circulation design provides super-breathable function, Prevent Body Odor and keep you dry and cozy. 3.Fine workmanship:Thermal set Four-pin six-wire process avoids friction between the garment and the skin, increasing the comfort of the wearer, perfect for workout. 7.Super Elastic:Round neck design, elastic waistband, comfortable to wear without indentation, allowing you to move freely at any time without worrying about falling.