- DANISH ENDURANCE invisible socks model 75000, gray color, size 39-42 - Ventilation zones that absorb sweat, keeping your feet cool and dry throughout the day - Heel with non-slip silicone to prevent the sock from sliding or causing chafing - High-quality cotton, soft and comfortable, ideal for low-cut footwear such as sneakers and loafers - OEKO-TEX Standard 100 certification, guaranteeing the absence of harmful substances - Danish design and European manufacturing, ensuring quality and responsibility - Recommended by Ironman athlete Anders Hofman for optimal performance - Perfect for daily use, sports, and casual activities