The Nike Swim Big Swoosh combines performance and comfort to handle daily swimming. Inner trousers in mesh, stretch at the waist and outer drawstring so you can find the right support and the most comfortable fit. Durable and comfortable material with a streamlined fit, perfect for both the pool and the beach. • Stretch in the waist and outer drawstring for comfort and size adjustment • Inner trousers in mesh for comfort, breathing and support • Perforated parts for breathability and for conveying water. • NIKE REPEL durable water repellent finish (DWR) • 5 inch inner stitch / 16 inch outer stitch • 95% polyester, 5% spandex / 100% polyester