80% Cotton/12% Nylon/8% Spandex Real Thigh High - Increased the length of socks to 2’6” (no stretched) from heel up to the top of the sock. These socks are real thigh highs! They are perfectly over the knee for women who's height is 5’2”-5’9”. In an informal test, it almost reached the top of the thigh (height 5’6" and 140 pounds). Underwear Cotton Material - We upgraded its materials from 30th October, 2019. It is much softer and warmer than ordinary cotton, take into account more thickness and flexibility. Wider Top Spandex – Increases the top spandex elastic band to 3 inches, protects circulation. Great Elasticity - All parts of the socks have good elasticity, it maintains the wrapping power of each part of the thigh. No need to adjust it every moment.