When you exercise, our power tower exercise equipment will only assist you, and will never bring you any troubles. You don't have to worry about it being weak, unstable, and not durable, because our equipment uses the excellent materials and scientific design, you can purchase to increase your gym equipment and use with confidence. Our scientifically designed the triangular steel frame enhances the stability of the upper part of the main frame. Reinforcement crossbar, and L tube prevents the main frame from leaning forward, and strengthen the stability of the base . Safety backrest with anti-back tilt,protect your spine during the fitness process.The backrest is 9.4 inch x 11.4 inch. The cushion is 9.4 inch x 3.9 inch. High density foam, Sweat absorption, non-slip, soft and reduce pressure, fitness is more comfortable.