Meet the Powers Yoga YogaBoard: a neat board that works your core stabilizer muscles and improves your balance and posture. It is lined with a 1/4″ yoga mat and 3 x 14-inch inflatable cushions. This board has a footprint of 66 x 16″.
The YogaBoard comes with a hand pump for adjusting the amount of air in the cushions to change the amount of instability. You can find out more about it here.