Here is another chair you can use for active sitting and exercise. The Vivora Luno activates your back and core supporting muscles, improving your posture in the process. It comes with a self-standing best and carrying handle. Luno can be used for yoga, balance training, and other exercises.
Luno is lightweight and easy to set up. You can also deflate it to get it out of your way. It is ideal for desk heights of 29″.