• Premium quality material: ABS material frames and PP material roller, sturdy and durable, with strong construction ribs. • Adjustable footrest: Six different heights, adjustable according to the height of the table and chair. • Ergonomic: Textured surfaces with massage and roller to improve blood circulation. • Non-slip base: Bottom that allows rolling and tilting without slipping or moving. • Versatile: Helps correct posture, improve work efficiency, and relieve stress. • Easy to assemble: Quick installation without tools, height adjustment via knobs. • Massage surface: Equipped with small particles and large rollers for effective massage. • Warning: Do not stand or step on the footrest.