Cotton Plain color Computerized Knit Knee-Hi Socks.Extra Smooth toe seaming. Meaning smooth stitching along the toe ridge line for added comfortRelaxed Rib Cuff. Non-Binding 3-pair Pack Knee-high socks.IDEAL for uniform wear.Machine wash warm, tumble dry lowComes in 4 sizes: S, M, L, XLSmall (3-7 yrs): Sock Size 7-8 1/2 , Fits 9-1 Shoe Size Medium (5-10 yrs): Sock Size 8-9 1/2, Fits 12-6 Shoe SizeLarge (10-Adult): Sock Size 9-11, Fits 6-9 Shoe SizeXLarge (Adult): Sock Size 10-12, Fits 9-13 Shoe Size78% Combed Cotton, 20% Nylon, 2% Spandex