Height Adjustable Big and Tall Office Chair Computer Desk Chair with Metal BaseHigh backrest with integrated headrest for better relaxation Height adjustable seat and rocking backrest bring you a lot of conveniences Solid frame with 5 claw metal base ensures strong load capacity Class 4 galvanized gas rod for higher stability and safety High density sponge and high resilience spring package for a soft cushion Durable faux leather for long time use 360 degree smooth rolling casters add more moving flexibility Suitable for various