CEP’s Run Tall Compression Socks 4.0 incorporate all the benefits of our best-selling 3.0 Tall Compression Socks, but with even more technological advances to help you elevate your performance. This redefined compression profile is more precise to effectively activate the nutrient supply in your feet and calves, making your legs feel stronger and lighter. Mesh-like structure on the calves, innovative air channels in the footbed, and ventilation zones in the toe provide additional breathability and ultimate comfort.