Sierra says: Pull on the lightweight 686 Women's Modern Support Top under your mid-layer and stay warm on frigid pow days. This scoop-neck long underwear top features a built-in support liner for comfort in motion, thumbholes for maximum warmth, and flatlock seams for easy layering. Embroidered accents and contrast stitching separate the Modern Support Top from your boring long-sleeve thermal...

Sierra says: Quick-drying and highly breathable are only two of the features that make this shirt comfortable. 360 Of stretch for unlimited mobility. Chafe-free softlock seams for comfort. Burton says: Not too hot, not too cold... it's just right.

Sierra says: Comes extra long to stay tucked into your pants all day long. Features in a multi polka square pattern that is fun and colorful. Look great, even under all the layers. Burton says: Heat up the polka party with this great layering v-neck.