Amia is a versatile ergonomic office chair designed to handle long hours of sitting.Features adjustable LiveLumbar technology inside its backrest that respond to the movement of your back. Fully adjustable and easily adjusts to fit you for perfect support, comfort, and performance all day long.Please note I have 4 chairs available, selling them individually (the price listed is for one chair)Feature and adjustment:Upholstered seat and back in cogent connect graphite color fabric (cadet gray)Frame and base color: Black 4-way fully adjustable arms height, width, pivot, and depth.Adjustable seat depth (from 15.5" to 18.5")Flexible front seat edgeUpright position back lock and adjustable back tension5" Pneumatic adjustable seat height (from 16" to 21")4" Back LiveLumbar height adjustmentWeight limit 400lbs.Manufacturer: SteelcaseYear manufactured: 2021 Overall dimensions: Depth 21.75" to 24.75" x Width 27" x Height 37.5" to 42.5 x Weight approx. 50lbs.Condition: These chairs are brand new, they have been stored and have never been used, but are missing the box (see the photos please)