Northwave evolution air socks 12cmthe evolution line socks are constructed from a meryl nexten fresh yarn that breathes well to keep your feet cool and comfortable silver micro particles in the yarn help to reduce unpleasant odours biomap construction puts support and ventilation where it is needed most features material 70 polyamide 15 elastane 10 polypropylene 5 polyester meryl nexten fresh yarn with silver micro particles offers an antimicrobial effect and reduces unpleasant odour