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. A Health Sock with 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.60% Alpaca, 20% Wool, 17% Nylon, 3% Lycra.