Under snow pants or pajama bottoms, the Isbjorn of Sweden Husky Longjohn Baselayer layers wool and bamboo into a soft, stretchy kids' base layer. The wool warms, and the bamboo moves moisture away from the skin, so the blend feels warm when wet and cool when warm. It works as a cold-season layer, a pajama pant or cozy leisure wear. What Our Gearhead(R) Experts Are Saying:"My kid wore these longjohns through a long cold day, and the flatlock seams never rubbed on their sensitive skin. They stayed warm in the wool blend, and I never heard a complaint."