Unless you’ve declared your independence from bras, you’re going to need women’s underwear – you gotta keep the girls in check from time to time, after all. And while you’re free to make your underwear optional down under, we really advise its use in cold weather. A base layer is the term you can use in polite company for long women’s underwear that wicks and warms under your real winter clothes, and you need a lot of it both up top and down below if you’re going to play hard outdoors. For sport bras, briefs, and long women’s underwear you can wear in any activity you’re inclined to pursue, check out our great selections from Terramar and New Balance.