Cushy softness to be enjoyed whenever winter chills the toes. Thick terry knit styling ideal for hiking, hunting, wading, or work boots. They will extend the enjoyment of winter activities. 75% Alpaca 23% Nylon 2% Elastic The sizes are SOCK sizes not shoe sizes. 7-9 fit ladies shoe size 5-8 9-11 fit ladies shoe size 8-10, or mens shoe size 7-9 10-13 fit ladies shoe size 10-12 , or mens shoe size 9-11 13-15 fit mens shoe size 11-14