Turn the seat clockwise and it gets higher, spin it counter-clockwise and it goes down; the Industria stool gets you where you want to go. It's like an old-fashioned piano stool, but made of steel and given a distressed brown/black finish to enhance its funky, industrial appearance. The range of seat-height adjustment is from 24" to 31", enough to take you from a counter to a bar and anywhere in between. It's a great idea for those of us who don't fit into the pre-determined dimensions of conventional stools. The base of the Industria stool has a 15" x 15" footprint.