1. All-day comfort: Men's thermal underwear set, designed with polyester and supertactile fabrics. A close fit, like a second skin, minimizes heat loss, is light and warm, and gives you a sense of security throughout the winter. 2. Men's thermal long Johns are made of breathable fabric, with a moisture drainage system, which can sweat fast, keep dry and light, and easily stay away from moisture. You can always relax or brave the outdoors to pursue your active lifestyle. 3. Suitable for men's design: Men's long Johns can be used as a close clothing under the coat, or as a comfortable pajamas. When out hunting, camping, skiing, skiing, biking, or running, layers of clothing are necessary to protect against cold climates or inclement weather. 4. Flexibility for any movement: Stretching offers full maneuverability and squat resistant design, and its strong seams do not tear prematurely. Men's long underwear allows you to move flexibly by embracing your body, you will feel free in all activities, and they will keep you warm without sacrificing your range of motion or comfort. 5. The combination of warmth, comfort and convenience is a great gift for any man in your life - husband, father, boyfriend or son! Product Description: Thermal clothingMaterial: Polyester (Polyester)Color:Dark gray;black;greySize:XLPacking contents: One piece