Antimicrobial design with six zones of compression for enhanced circulation and recovery. Minimizes discomfort from Achilles tendonitis, leg cramps and shin splints. Sizes S-XL OS1st CS6 Calf Sleeve The OS1st CS6 Calf Sleeve is tough on muscle pain but gentle on your body. This comprehensive treatment sleeve can address shin splints, leg cramps, Achilles tendonitis, general aches and more. It provides medical-grade compression over six zones to protect against injury while enhancing circulation and boosting recovery. Use it during times when you need that extra bit of support or simply want to strengthen your performance. The CS6 Calf Sleeve has a durable, supportive design but is slender enough to be worn under pants and socks. It is made with antimicrobial silver-ion tech which limits odors and moisture-wicking fabric which prevents irritation to the skin. Players will notice reduced vibrations to their calf muscles for better recovery. The CS6 Performance Calf Sleeves offer stabilization and boosted oxygenation in the legs so you can play in comfort for longer periods of time.