This product is made with polyester. Shell and brief: 100% polyester. Machine washable. Size medium has an 8" rise and a 5.5" inseam. Signature embroidered Pony at the left hem. Elastic drawstring waistband. Side on-seam pockets. Back right buttoned pocket with an extra buttonhole. “Polo Ralph Lauren Swimwear” label at the back pocket. Interior mesh brief with a coin pocket. Imported. Online Product ID: 100040051 Style Number: 323957810006