Simply Underwear

This walking sock is engineered to cushion and protect the foot from heel strike, and prevent blisters Product Features: Mid-weight padding protects against shock and impact Instep pad protects against lace pressure Spandex around arch provides extra support and stability Extra large is priced $1 higher * 80% Thorlon Acrylic, 15% Stretch Nylon and 5% Spandex Sizing: Medium fits Men shoe size 5.5-8.5, Ladies shoe size 6.5-10 Large fits Men shoe size 9-12.5, Ladies shoe size 10.5-13 * X-Large fits men shoe size 13-15