The Therapeutic Rock Mat stimulates over 200,000 foot nerve endings and increases proprioception. Firm foam applies pressure to specific parts of the sole of the foot and releases tension.
Density: The regular Rock Mat is a Medium-Firm, the Rock Mat XL is Firm.
Fun Fact:
The idea for the XL Rock Mat XL came directly from a head trainer at the LA Lakers. It's the perfect pre-game tool in their locker rooms.