Natural thermoregulatory effect. Alpine socks are highly recommended for long days of skiing at low temperatures. Very comfortable and soft. They achieve a great thermal regulation due to the combination of merino wool and silk.Features:- Anatomical ankle support- Special mesh fabric to facilitate sweat evaporation- Instep protector- Inverted seam to prevent chafing- Self-adjusting Cuff- Compression area which stimulates blood circulation- Special reinforcement for the Achilles tendon- Heel and toe reinforcement- Anatomical designSpecifications:Composition:- 41% Wool 41% Polyamide 14% Silk 4% ElastaneTechnology:Merino Wool/Silk:- One of the strongest, most resilient, elastic, soft and lightest natural fibres! For sensitive skins and those allergic to synthetic fabrics.Washing Instructions:- Wash in cold water- Do not dry-clean- Do not tumble dry- Do not iron