Material - The executive office chair is made of upholstered, carefully-selected PU material that is waterproof and resistant to stains, easy to wipe clean, and filled with high-density sponge padding for a natural leather look for an upscale look. Functional - Adjustable high-back computer chair for home or office workspaces; segmented padding on the seat and back. The lumbar zone expands and contracts as you lean forward and back; flip-up armrests to allow for more flexibility and motion range when desired. Ergonomic - armrest length 15", seat-to-armrest height 9.4", the armrests can be flipped to adjust your relaxed posture. The thickly contoured upholstered ergonomic chair supports the waist. Continuous comfort for long hours of gaming or working.