Panthera X is completely new construction with chassis and back rest frame made of carbon fibre The carbon fibres fantastic lightness and strength makes Panthera X by far the lightest wheelchair in the world. With new state of the art technology to place the fibres in the right direction we have increased the strength even more. The lightness and stiffness of the chassis makes Panthera X fantastic to drive and to lift into, e.g. a car. Panthera X has a built-in rear axle, just like Panthera U2 light, To balance the chair you choose one of the 4 positions of the attachment for the backrest. The angle of the backrest is adjustable and the backrest height can be selected between 22 and 35 in steps of 1 cm. The footrest is adjustable in height.