Thermals Top & Bottom Set: This ultra soft thermal set features a classic tagless crewneck, seamless cuffs with no binding worries and elastic stretchy waistband, keeping you warm and cozyMidweight Base Layer: This long johns set is of medium thickness and can be easily worn underneath regular clothes. The inside of the set is treated with sanding to retain heat and keep you warm in cold weather. The moderate thickness also allows it to be easily packed into a suitcase for tripsFree Movement: This close-fitting womens long underwear with stretch is a perfect insulating layer for all winters that you can put on for outdoor activities such as skiing, hunting, camping or snowboarding. The surface of this polyester-spandex fabric is treating with sanding to add a smoother feel and allow easy slip-on and put-off, which also allows flexible movementA Perfect Under Layer in Winter: The inside of the garments are soft and the outside is smooth, which allows outwear to slide over this thermal underwear with no catching or bunching. The material is also thin enough that it doesnt create a bulky feelPerfect Warmth: When lounging at home, use it as a baselayer under a coat, suitable for wearing under jeans or loungewear. Or as cozy thermal pajamas set on cold nights.