Smartwool Arabica Stripe Sock - Women's wool Knee high skinny stripes for fun and fashion. Smartwool Fit System with arch and ankle support. Women's sizes Small (shoe size 4-6.5) Medium (shoe size 7-9.5) Large (shoe size 10-12.5) NOTE Women's size Small fits Youth shoe size 2-4.12 71% Wool, 27% Nylon, 2% Elastane. Washer and Dryer Friendly! Non -Cushioned sole, knee high height, Smartwool Fit System with arch and ankle support