Features

Ultra High Density Cushioning on foot bottom. Won't break down under pressure. Less bulk more comfort.
Ribbed ankle support: Keeps sock in place. No slipping or bunching.
Arch Support: Provides extra lift and endurance
Zero Friction Y Heel: Deep heel pocket keeps sock in place - reduces friction. No blisters.  Ring toe construction for a comfortable, invisible inseam

70% merino wool, 28% nylon and 2% Lycra® spandex

Sizing

Small (Womens 3-5)
Medium (Womens 7-9.5,Mens 6-8.5)
Large (Womens 9.5-12,Mens 9-11.5)
X-Large (Womens 13-16, Mens 12+)