MATERIALl: Thermal underwear set is made of ultra-soft polyester that feels cozily soft, is completely non-irritating, and keeps you comfortably warm to beat the cold weather. BREATHABILITY: Breathable fabric is perfect to keep sweat away. At the same time, the lightweight thermal clothing maintains your body heat at a cool temperature wicking moisture away from your skin. STRETCHABLE: Four-way stretch and gives you the needed warmth without thick or heavy layers. The suit can be repeatedly washed without shrinking. Machine wash. FEATURE: This long underwear to keep you toasty without being too bulky. You can easily slip your daytime clothes or pajamas over the thermal base layer, . Tights or shirt can be used as base layer or worn alone. APPLICATION: Ladies extreme ultralight warmest top and tights Sets makes your favorite cold weather activities more pleasant. Whether you are hiking, biking, hunting, snowboard, ski and camping or other outdoor. Our Thermal Underwear will be the best Choice for Thermal Retention in Winter 2 piece set: 1 long sleeve top + 1 full length bottom Feature: -Double layer long knit cuffs. -92% ultra-soft polyester, 8% spandex -Elastic waistband -Fleece lined moisture wicking -Full cut comfortable fit -Ultra Soft Warmth -Shrinkage controlled for lasting size and shape -Thermal knit retains body heat to keep you warm and comfy. Description: (1)Winters can get rough and cold. These thermal underwear will help you make it through. They are silky on the outside but lined with soft thermal fleece on the inside. (2)They can also be worn under your casual or formal attire such as under your jacket, sweater or hoodie without adding any bulk or visible crease lines in your clothes. (3)The waist of the pants is elastic for a comfortable snug fit. Both top and bottom are stretchy, perfect for active wear.