Nike Women's Pro Midnight Floral Limited-Edition Print Training Tights, Black (Medium) 20% spandex Style Number: 777871-010 80% polyester / 20% spandex Wide elastic waistband for a flattering fit that stays in place Flat seams move smoothly against your skin Flat seams move smoothly against your skin Fabric : Body Dri-FIT 80% polyester, 20% spandex. Gusset lining Dri-FIT 100% polyester