Exigo donkey calf raise is part of the market leading exigo range it is one of the best exercise for developing the calf muscles in size and strength the maximum load of machine is 1000lbs allowing anyone from first time gym user to the strongest man in the uk use this machine the material in which the frame is made out of is steel which provides durable and strong base to the performers weight this exercise is performed bending forward which means for the user to be comfortable the padding