Breathable mesh socks with anti-slip function, designed to protect the Achilles tendon. ★ Sizes 23-28 Image 5: Actual product shown - Colors: Black/Gray - Functions: Anti-slip, breathable mesh - Features: Protects feet, prevents Achilles tendon friction - Design: Striped design - Size: Free size I bought a set of 3 of these similar socks because Tabio socks are expensive, but I won't use them all, so I'm selling one.