This No Arms Adjustable Rolling Swivel Chair Home Office Chair Ergonomic Desk Chair Mesh Computer Chair With Lumbar Support Swivel Rolling Executive Adjustable Task Chair The Ergonomic Mesh Office Chair Can Maintain The Normal Curve Of The Lumbar Spine And Relieve The Pressure Of The Intervertebral Disc. Mesh Office Chair Has A Durable Breathable Mesh Backrest That Allows Air To Circulate And Keep You Cool When You Lean.Product Specifications:-Colour: GreyMaximum Dimensions: 16.7 Inches W X 21.7 Inches D X 35.6 -40.4 Inches HSeat Width: 16.7 InchesSeat Depth: 16.3 InchesSeat Height: 18.3 Inch23 InchesBack Width: 15.6 InchesBack Height: 17.7 InchesMid-Back Office Chair Has Heavy-Duty Metal Base. It Have Passed The Test Of Classic-3 Gas, Sgs And Bifma!, Which Is A For Your Personal Safety. Is Reliable And Sturdy Choice For Users Who Less Than 250 Pounds.The Soft And Moderate Sponge Pad Can Adapt To The Sitting Position Of The Human Thigh For A Long Time, With Full Shape, Good Elasticity And No Deformation, Which Can Provide You With A Comfortable Seat.Height Adjustable From 35.6inch To 40.4inch To Meet Your Height, And Different Tables Height. In Order To Make Your Arms Feel Comfort, Please Let Your Arms Fit With The Armrest Of The Chair Perfectly .The Bottom Of The Desk Chair Is Equipped With A Tension Adjusting Knob To Provide A Certain Degree Of Tilt So That You Can Relax After Work.???Tynb Good Team?: No Arms Adjustable Rolling Swivel Chair, If You Have Any Quality Problems Please Contact Us Any Time For After-s Service. Our Experienced Customer Service Team Will Respond In 24 Hours Asap