"Medium cushioned all purpose mini crew athletic sock. Top: 3x1-rib welt top with nylon holds the sock up and in place. Instep: flat knit for less bulk and great fit. Arch Brace: knit with elastic for increased support and comfort. Sole: medium density padding cushions against shock, blisters and abrasions. CONTENT: 70% Wool, 20% Nylon, 4% Elastic PLEASE NOTE: This style has been discontinued by the manufacturer. Supplies are limited."