Vinyl Bar Stool W/ Adjustable Height Air Lift & Swivel (2002 Black) Sleek chrome metal base, seat covered in black faux leather/vinyl. Side lever adjusts seat height up and down, swivel chair design so you can turnaround. Light assembly required, not recommended for over 200 lbs. Seat Measures 15 by 15 inches. Adjustable Seat height from 25.4" to 30 Inches. We constantly update our items following customers reviews, since then this item's base has been widened to 16.5" so it stands more confidently.