ERGONOMIC DESIGN: Comfortable lumbar support, high back, wide armrests with padding and a reasonable assembly line make long periods of sitting comfortable. THICK PADDING: Thick sponges on the back and hips are densely padded for a comfortable experience and provide support for your body to avoid sedentary fatigue. Even there are padding on the armrests. And we use durable linen fabric to provide breathable comfort. ADJUSTABLE HEIGHT AND ROCK FUNCTION: This office chair can flexibility adjust the seat height depending on your sitting habits. And you can adjust the height of armrests to match the height of desk. You can also rock back and forth to have a break. FLEXIBILITY AND STABILITY: Electroplating five-star foot and PU wheel guarantee the smooth rolling have both great stability and mobility. Its universal wheel can be rotated 360 degrees for easy movement, you can move your chair easily and quickly to near your colleague. Dimension: Overall Dimension: 64L x 70W x 111-121H cm, Armrest Height: 66-74cm (to the ground), Seat Size: 54W x 54D cm, Seat Height: 52-62cm