Ergonomic chair: adjustable seat depth, 4D adjustable armrests, adjustable lumbar support, height adjustable pneumatic seat, adjustable tilt tension, back lock in forward position, upholstered back and seat All-day comfort and support: Amia's seat and back form a synchronized system that follows the movements of the body to provide optimal comfort over time Fame Fabric is 95% Wool, 5% Polyamide (OEKO-TEX and EU Flower certified), Abrasion Martindale 120000 cycles EU Flower certified), Abrasion Martindale 120000 cycles Wheels: best suitable for hard floors (parquet, tiles, etc.) or soft floors (carpets) Fully assembled: 12 years manufacturer's warranty; Made in France