Keep Warm All Day:The outer layer of the mens thermal shirt is elastic spandex material,4-way stretch,and the inner layer is a fleece-lined thermal layer,which is soft and warm,so the thermal underwear can reduce heat loss and keep you warm all dayFlexibility for Any Movement:The fabric of the mens long johns thermal shirt has 4-way stretch, which is very light without bound feeling, providing freedom and support for the body, allowing you to bend, stretch, jump and run freelyMoisture Wicking and Anti-odor:Mens base layer is made of breathable and moisture wicking fabric that quickly wicks away moisture,suppressing the unpleasant odors left behind by sweat,keep you dry with no sticky or clammy feelingOccasion:Mens thermal underwear top is suitable for indoor and outdoor activities,can be used as pajamas at home,or can wear it under coat to keep warm and comfortable when you are hunting,hiking,cycling,skiing,fishing,military and tactical gamesPerfect Gift for Men:Mens long sleeve compression shirt is lightweight,excellent in warmth and windproof performance,wicks away moisture,which will be the best winter gift for your son/husband/father on birthday,Thanksgiving,Christmas and New Year