US only. Fast delivery in 3-7 business days.Detail The women thermal underwear, keep you warm from top to bottom. They promote thermal insulation by trapping your body heat and keep you consistently warm, no matter if you are indoors or outdoors. Cozy fit and warmth come together in everyday comfort. A modern update to your classic sweatshirting style with added stretch for total comfort. Smooth on the outside, fleeced on the inside.