The Stanningfield executive office chair features a waterproof premium PU leather cover that protects the soft sponge padding inside. The seat is deeply cushioned and can be adjusted to your preferred height. The chair has a relaxing rocking feature that lets you sway back and forth, providing a comfortable and soothing experience. The ergonomic design features a curved backrest that perfectly fits the curve of your body, providing maximum support for your waist and preventing back pain.