NIKE AEROSWIFT Nike AeroSwift technology integrates innovative features and materials with precision fit to deliver exceptional mobility and lightweight comfort to help you at your fastest from start to finish. Sweat-wicking technology helps you stay dry and comfortable. Flyvent waistband provides lightweight ventilation for exceptional comfort. Lightweight brief provides extra support and ventilation. Product Details Standard fit for a relaxed, easy feel Pleated back Double Swoosh design at the sides Split hem Body: 100% recycled polyester. Waistband: 73% nylon/27% spandex. Lining: 89% recycled polyester/11% spandex. Machine wash