1.Excellent Thermal Retention: Designed,this thermal underwear is really soft, warm and windproof. 2.Set of long sleeve thermal shirt and bottoms can keep you warm while running, cycling, skiing, hunting, jogging or walk the dog for extreme cold weather. 3.Nice Flexibility For Any Movement: The material of this mens thermal clothing is designed with four way stretch compression for your freedom of outdoor activities, never have bound feeling. 4.Breathable And Quick-drying: Breathable and moisture wicking fabric is perfect to keep sweat away and dry fast, it perfectly repels odors and unpleasant smells left behind from sweat and dirt, enjoy your outdoor training or sports freely. 5.Feel Free At Home Or For Outdoor Sports: The men's thermal underwear is good to wear at home or as a base layer under your coats, it also will warm you as comfy pajamas on cold nights.