Sigvaris' All-Season Wool Socks are part of their Zurich Collection, offering graduated compression therapy of 15-20mmHg to improve circulation. These socks are knitted from the world's finest Australian Merino Wool, which is comfortable, itch-free and thermo-regulating, and works to keep feet dry during year round wear. Wool also contains natural properties that make these socks odour resistant. These socks are ideal for people with sensitive skin.