66°North Frigg Tights
Here's what other sites are saying:
When the cold winds start blowing kids need warm baselayers so that they can still enjoy the outdoors. That's why 66 North created Frigg Tights , made from Polartec Power Stretch fabric to keep little legs warm. Fleece never felt so soft, warm and flexible. These are our warmest long underwear bottoms and can be worn and washed over and over again without pilling.