Acrylic Hydraulic Lift Adjustable Counter Bar Stool Dining Chair Clear -Pack of 2 (2017) Adjustable Height hydraulic lift. Base Size :15.1" Across, Seat Depth: 15.3" Width :15.1 Total Height : The bottom of the seat goes up from 22.6" to 30.6" Weight Limit: 6' 250 Pounds