Our 4 pack of ankle socks come in a selection of bold and bright patterns, adding an eye-catching flair to your everyday sock rotation. 4 Pack. Ankle height. Range of patterns and colours available. 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.