Our Siren Bikini underwear bottoms are so soft and cozy you won't even realize you're wearing your underwear. The Siren Bikini features our corespun merino wool blend for added strength and durability, while retaining next-to-skin softness. This style offers a modern fit of bulk-free comfort at the waist and leg openings, and the side seams are moved forward for chafe-free movement. Wear them under all your activewear or day to day denim, and find yourself most comfortable wearing them with the Siren Bra and our ultra soft Siren tops collection.