The CompressRx sock gets upgraded with ZoneRx technology in 2011.
- ZoneRX - Muscle-specific zones of compression stabilize the calf muscles reducing muscle damage during exercise
- CRx - Graduated compression from the ankle to the top of the calf that helps remove lactic acid and improve blood circulation back to the heart
- SynchroRX provides moisture management and temperature regulation
- Achilles tendon support
- Padded foot soles prevent foot irritations