100% national production socks, made by Extincêndios - HÉS. Composition: 68% Coolmax; 30% Polyamide; 2% Lycra Elastane. The elastic shaft provides additional support and stimulates blood circulation. The flexible instep distributes pressure and prevents the socks from wrinkling. Its support arch provides support to the forefoot and prevents the sock from slipping. Its stitching is perfect and smooth, providing even greater comfort.