The Lurbel Track Four socks, designed for long-distance trail running (35 to 150 km), offer H4 semi-rod coverage (8 cm) to protect the ankle without limiting mobility on technical terrains. Their +A ergonomic fit, pressure-free, along with strategically placed ventilation zones and a non-slip band on the instep, ensure adaptability and comfort without chafing. The ESP 2 plantar structure, with reinforcements in the heel, midfoot, and toe, cushions efficiently without sacrificing lightness.The Bmax Tetra technology combats overheating, moisture, and friction, reducing the risk of blisters. And the Anti-odour Base Layer mesh provides natural antibacterial and anti-odour protection.Features:Use: Trail-runningRod length: 8 cm (H4, semi-rod)Breathable and antibacterial fabricRecommended distance: Medium (3.