This 5-pack of ankle socks are ideal for stocking up on your every day staples, made from a cotton-rich fabric blend in a choice of colours and prints. 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 bi-ome trademark of devan chemicals NV. This product contains the biocide linseed oil.