Executive chair is upholstered with LeatherPlus, a combination of leather and polyurethane, for added pliability and extra softness. Fixed arms enhance the chair's modern design and can be easily wiped down. Pneumatic gas lift allows easy seat-height adjustments to help you find the personalized sitting style that suits you and your work environment. Spring-tilt mechanism allows you to change the angle of the entire seat relative to the floor and to transfer some of your upper body weight to the backrest of the chair. The 27" nylon base offers extra stability to the chair by spreading the load over a larger surface area to help prevent tipping. Hooded, double-wheel casters slide smoothly on floors to make it easy to move and shift directions. Executive chair supports up to 275 lb.Executive chair is upholstered with LeatherPlus, a combination of leather and polyurethane, for added pliability and extra softness. Fixed arms enhance the chair's modern design and can be easily wiped down. Pneumatic gas lift allows easy seat-height adjustments to help you find the personalized sitting style that suits you and your work environment. Spring-tilt mechanism allows you to change the angle of the entire seat relative to the floor and to transfer some of your upper body weight to the backrest of the chair. The 27" nylon base offers extra stability to the chair by spreading the load over a larger surface area to help prevent tipping. Hooded, double-wheel casters slide smoothly on floors to make it easy to move and shift directions. Executive chair supports up to 275 lb.