trimfit Girls' Little Girls' 2-Pack Cotton and Spandex Cable Knee-Hi's 70% Cotton, 26% Nylon, 3% Spandex , 1% Rubber Imported Machine Wash 85 percent cotton/11 percent nylon/3 percent spandex/1 percent rubber Designed in USA Machine wash cold with like colors. Only non-chlorine bleach when needed. Tumble dry low. Do not iron trimfit. Wear tested since 1922