1, external dimensions (length × width × height): 107cm × 65cm × 80cm , mainly using high-quality steel, high-density sponge, leather, etc. 2、Seat: height 45cm, width 50cm. 3、Adjustable distance between front and back of seat cushion: 10cm 4、Adjustable range of footrest angle: 0 °~85 °. 5、Backrest cushion rated load: 750N 6、Seat cushion rated load: 2000N 7, product use: for ankle dorsiflexion dysfunction for active and passive training. 8、Features and Functions:The distance between front and back of the cushion is adjustable to adapt to the use of people of different heights and body types. The ankle training can be carried out by driving the foot pedal movement through the forward and backward movement of the handle.