Studio Designs Maxima II Drafting Chair in Black 18622 Overall Dimemsions:26.25"W x 22.5"D x 38.5"-46.5"H Pneumatic Height Adjustment: 24.5" - 32.5"H Adjustable Seat and Back Padded Seat and Backrest, Chrome Teardrop Footrest Five Star Nylon Base with Casters for mobility, Meets / Exceeds ANSI-BIFMA Standards Overall Dimemsions:26.25"W x 22.5"D x 38.5"-46.5"H Pneumatic Height Adjustment: 24.5" - 32.5"H Adjustable Seat and Back Padded Seat and Backrest, Chrome Teardrop Footrest Five Star Nylon Base with Casters for mobility, Meets/Exceeds ANSI-BIFMA Standards