Socks 30-40 mmHg These socks will change your life. Maximum compression, patented 5-layer arch support, and anti-cramp calf weave—for shifts so long you forget that sitting down is even a thing. Details These socks will change your life. Maximum compression, patented 5-layer arch support, and anti-cramp calf weave—for shifts so long you forget that sitting down is even a thing. Knee high 30-40 mmHg compression Patented 5-layer arch support Y-Strap Energy Return System Patented achilles protection system Moisture-wicking and antimicrobial Left and right foot specific design Anti-cramp calf weave Medical Grade Compression Dynamic Recovery Antimicrobial