Hybrid Ergonomic Chair Adaptive Lumbar Support G-Force Equalizer Contactless Adaptive Recliner Mechanism 4D Adjustable Armrests CloudSilk Fabric Supports Up to 220 lb 18.5' to 22.05' Seat Height Designed to task seating based on anthropometric body measurements with racing car-inspired style. The most secure back and body support suitable for any body type in any sitting position. Smart technology distributes the weight on the chair seat for better blood circulation. Seat adapts into a comfortable and supportive position automatically without any physical touch.