Alpaca Wool Blend sock from Humphrey Law. An exceptionally warm luxury sock made with a blend of alpaca and wool. Alpaca fibre is soft, supple and smooth and contains microscopic air pockets which act as insulators keeping in the warmth provided by the wool and no tight elastic top but note as alpaca is a luxury fibre these socks are not recommended for high abrasion use such as work boots. Made from 60% Alpaca, 20% Wool, 17% Nylon, 3% Lycra.