A unicorn zooms by on this extra-stretchy knee high, propelled by the power of the rainbow! Wait a second, where's that rainbow coming from...?! These socks are super stretchy! They will stretch to fit a 21-inch calf, and the foot will expand from a women's size 6 to approximately a women's 12, or a men's 11. 57% cotton, 41% polyester, 2% spandex. Made in Korea.