Our grey ribbed leg warmers are the perfect accessory to keep your ankles cosy when wearing a skirt or shorts, or layered under trousers in the colder months. 1 Pack. Ribbed. Perfect for layering. 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.