Skip Technical skisocks with reinforcement and compression to increase blood flow in the calf muscles There is contrast at heel & toe and embroidered text on the tread. The quality is 70% microlon, 15% polypropilene, 12% polyamide and 3% elastane Model: 855 - Anti-Stress Comfort edge. - Anatomical structure of different yarns in the fabric with elastic fiber to provide the perfect progressive compression - Ankle protection. - Heel in substance sponge of PP Dryarn with high protection. - Inner sole of PP Dryarn with ventilation channels. - Sewn in the toe area for extra shock protection. - Anti-chafing flat seams. - Front protective pad with ventilation channels in the area of highest stress.