1. Cover: high quality leather upholstered, comfortable and durable 2. Foam: high density foam, durable shape, soft seat 3. Armrest: strong pp, fastness and smooth 4. Base: high quality nylon, durable 5. Gaslift: strong chrome, with dust cover, agile lift and no-malfunction 6. Tilt tension adjustable, seat height adjustable 7. Design:a photo, fine workmanship Office Chair