NIKE Pro Core Compression 9" Short 100% Polyester Imported Superior Technical Fabrics - Provides optimal ventilation and moisture management for when you are hot and seating during sport and fitness activities. Strategically Designed Seams - Provides enhanced comfort with the fabric contouring to your body shape. Fabric - Body solid: Dri-FIT 84% polyester/16% elastane jersey. Body heather: Dri-FIT 45% polyester/39% nylon/16% elastane jersey. Tubular, Seamless Construction - Offers reduced chafing and added comfort.