The Seated Arm Curl machine is typically designed to target the biceps muscles. It involves sitting on a padded seat with a pad or armrest for each arm. The exercise is performed by gripping the handles or armrests while keeping the upper arms stationary against the pads and curling the forearms upward to contract the biceps. Then, the weight is lowered back down in a controlled manner to complete one repetition.SPECIFICATIONS Footprint (D x W x H) 38 x 34 x 42 inch (metric cm: 97 x 86 x 107) Recommended Live Area (D x W) 74 x 70 inch (metric cm: 188 x 178) Machine Weight 150 lb (68 kg) Max Capacity 385 lb (175 kg)