Our thermal wool blend ankle socks are warm and breathable, featuring a wool and silk blend with a cable design and ankle height for everyday wear. This product has been given an anti-microbial treatment to prevent the development of odour which will keep your socks feeling fresh. BIOME Is a specially designed technology which helps to keep your socks fresh and odour-free. It is a bi-ome trademark of Devan Chemicals NV. This product contains the biocide linseed oil.