Upgrade your underwear collection with our Seamless Bikini 4-Pack that comes with a fun gift box! This bundle includes one bikini in each of our four Chamonix colors. High Performance and Comfort: Each bikini is made with super-soft, micro denier recycled nylon and spandex yarns. The fabric wicks moisture and dries quickly, keeping you cool and dry. The 4-way stretch fabric moves with you, offering unrestricted freedom of movement for any activity. Durable Design: Reinforced waistband stitching provides long-lasting durability, and the wide waistband prevents rolling. We guarantee our products for one year from the date of purchase. Stay-in-Place Promise: Our bikinis are designed to stay in place, so you can focus on your workouts, free from distractions. Chemical free: Our bikinis have been tested and are certified BPA-free and PFAS-free. (See our blog story to learn more about the effects of the high levels of chemicals that have been found in many other activewear brands.) Note: For those concerned about underwear lines under leggings, we recommend trying our seamless or natural fiber thong. 4-Pack Gift Boxes are sold as a complete set and are not eligible for exchanges of individual sizes.