Matrix Magnum Seated CalfMagnum Seated Calf MG PL77 Product is Manufactured to Order. Standard International Lead Time of Approximately 12 14 Weeks. Maximise calf recruitment and comfort with our Matrix Magnum Seated Calf. A comfortably curved and angled foot pad to optimise biomechanics, and a quick release bar catch simplifies operation. The knee pads easily adjust for tibia length and range of motion, while the seat moves with the input arm to maintain alignment. Features