The Single Leg Extreme Calf Machine was designed as a compact unit for traveling and home use to allow for stretch and contraction of one leg at a time in one movement. Easy to use - patented pivoting pedal for maximum stretch, lightweight-strong and durable portable and non-skid surface. Helps increase the flow of blood and oxygen throughout the calves. Helps develop, shape, stretch, tone and rehabilitate the calf and Achilles Tendon. It also helps to prevent shin splints and works the tibialis. Improves inversion, eversion and balance.