Relieve Pain Caused by Sore Aching Legs and Feet, Cramping and Shin Splints with OS1st's Light, Comfortable Calf Sleeves. CS6® Performance Calf Sleeves provide athletes with relief from calf pain and injury. Find prevention and relief from muscle cramps, venous insufficiency, Achilles tendinitis, and shin splints.

Targeted Conditions:
- Achilles Tendonitis
- Shin Splints
- Leg Cramps
- Aching Legs & Feet
- Circulation Optimization
- Muscular Support
- Achilles Stabilization

Performance Features:
- Reduce impact vibration of calf muscle
- Post-event recovery
- Boost oxygenation
- Achilles stabilizer
- Medical Grade Compression
- Advanced medical device for recovery, ortho-support and venous insufficiency
- Easy-on fit designed to be worn under socks, alone or paired with the FS6® Performance Foot Sleeve
- Soft, moisture-wicking fabric
- Wear during walking or exercising for extra protection