This new product is more than just a compression sock to improve sports performance. Itís a graduated compression sock. Most sports socks on the market (if not all of them) are not medical devices because they apply compression to the calf and are NOT exactly made to help blood circulation. As a matter of fact, you usually buy sports socks at sports stores and not in pharmacies. We want to provide a high-performance product to people who wear medical socks and tights every day due to circulatory problems and need compression socks even when they practice sports. Now, they can have fun practicing their favourite sport wearing graduated compression socks. This new product is more than just a compression sock to improve sports performance. Itís a graduated compression sock. Most sports socks on the market (if not all of them) are not medical devices because they apply compression to the calf and are NOT exactly made to help blood circulation. As a matter of fact, you usually buy sports socks at sports stores and not in pharmacies. We want to provide a high-performance product to people who wear medical socks and tights every day due to circulatory problems and need compression socks even when they practice sports. Now, they can have fun practicing their favourite sport wearing graduated compression socks. Main characteristics: Many unique properties in one product to ensure the utmost comfort and best performance. Lightweight, insulating, breathable. Manufactured with high-performance Dryarn fibre.Ribbed knit for improved progressive elasticity.Elastic band for foot arch support.Seamless, protective and elastic toe to avoid chafing and blistering.Class 1 medical device. Graduated compression to promote venous return.Breathable stitched mesh for improved back ventilation.Achilles tendon and heel protection against impacts to reduce vibrations and prevent microtraumas.Anatomic protective insole with ventilating bands. Unisex elastic-compression socks made with Dryarn fibre (average compression ratio 15-20 mmHg) They promote venous return and muscle recovery. Unisex elastic-compression socks made with Dryarn fibre (average compression ratio 15-20 mmHg) Dryarn fibre: super lightweight, hydrophobic, super-breathable and thermoregulating. Unisex elastic-compression socks made with Dryarn fibre (average compression ratio 15-20 mmHg) Suitable for all sports and any season (they keep you warm in the winter and cool in the summer). Unisex elastic-compression socks made with Dryarn fibre (average compression ratio 15-20 mmHg) Anatomic heel and seamless toe for no abrasion or chafing.