Back pad adjustments for proper alignment with machines axis of rotation Lower Tibia pad self-adjusts limiting the number of necessary adjustments Range of motion is adjustable for users with limited knee flexion Built-in storage at top of tower for phone and water *The weight of stacks includes counterweights WEIGHT STACK 90kg / 195lbs(15lbs x 12pcs) 116kg / 255lbs(20lbs x 12pcs)Optional GROSS WEIGHT WITHOUT WEIGHT STACK 154kg / 340bs PRODUCT WEIGHT 244kg / 538lbs CARTON DIMENSION CARTON A 1500 x 745 x 180mm / 59” x 29” x 7” CARTON B 1510 x 820 x 150mm / 59” x 32” x 6” CARTON C 1220 x 980 x 280mm / 48” x 39” x 11” PRODUCT DIMENSION 1156 x 1407 x 1592mm / 46” x 55” x 63”