SmartWool Microweight 150 Bikini - Women's - $27.95

No, the term 'wool biknini' is not an oxymoron. SmartWool made the Women's Microweight Bikini from a soft, stretchy merino wool-spandex blend that fits like a dream, wicks and breathes, and fights odors. In fact, merino could be considered the ideal material for active womens' underwear. - $27.95