The Body Iron Seated Calf Raise Machine is an excellent tool for building strength and adding muscle mass to those hard to hit calves, a muscle group that is often overlooked when it comes to leg day. - By regularly incorporating calf raises into your workout regime you'll see improvements in your foot and ankle stability, as well as overall leg strength and performance. For our cardio-lovers, strong calves can also help with boosting your speed and power, helping you achieve a quicker running pace.specifications - Weight Capacity: 200kg Assembled Dimensions: 117cm (L) x 58cm (W) x 56cm (H). Sleeve Diameter: 30mm - Olympic adaptor available. - ADAPTABLE: this machine has the ability to take on an Olympic adaptor, making it compatible with both standard and Olympic weight plate. Olympic adaptor - $30. ADJUSTABLE: you can easily adjust the knee support roller to suit your height and limb length. LARGE SEAT: comfortable padded seat that offers optimal support. - Lifetime Frame (against manufacturing defects).2 Year Parts.1 Year Upholstery/ Foam Rollers.