Women's Poolside Bikini Bottom. The Women's Poolside Bikini Bottom is made for long days in the sun and easy time by the water. Whether you're at the lake, pool, or beach, it keeps things comfortable and ready for whatever the day brings. Built with a soft stretch blend and moderate coverage, it offers a secure, flattering fit that moves with you. Finished with all-over artwork, it pairs perfectly with the matching top for a complete warm-weather set. 80% recycled nylon / 20% spandex construction. Soft stretch fabric for comfort and flexibility. Moderate coverage for a secure fit. Sublimated all-over artwork.