wobble
I've been using a straight-backed chair when I sit at my computer for a long time. A few weeks back I decided I wanted to switch to something that more directly encouraged good posture and sitting with a bit of movement. Instead of a chair, I started looking at stools.
Wobble stools jumped out. I started reading and looking at available products. Most of the stools I found were too tall at the shortest setting; they were designed for use with a standing desk. Then I found the Interstuhl wobble stool. While it's hard to tell from the photo, the base of the stool is rounded and the seat swivels. It can easily be set at any height between 17.25 inches and 24.75 inches, changeable on a whim!
:: from the product description ::I've been using this interesting stool for a week now, and I'm very happy with it.
"The unique design of this active sitting chair is both attractive and functional, allowing you to sit still, or swivel and sway to your heart's content. The wobble base is non-marking and grips the floor for stability, while the feather weight and teeny tiny footprint makes the wobble stool easy to stash when you're not using it."
![wobble stool wobble stool](https://photos.smugmug.com/photos/i-vRCjBPm/0/c7ddadaf/S/i-vRCjBPm-S.jpg)