Standing Calf Raise – Impulse SLThe specially designed Impulse Fitness Standing Calf builds strength in gastrocnemius muscles. User stands on tiptoe to drive the rise of shoulder pad. Train calf muscles in a safe and effective way. Impulse Fitness SL line (Sterling) Robust Standing Calf Raise , effective and aesthetically appealing, this professional plate loaded line is designed to reproduce the feeling of using free weights. The application of advanced bio-mechanics ensures that our equipment follows the body’s physiological movement.