1.Togu itself is a rubber ball, round shape, but flat filled with just as much air that there is sufficient resistance while sitting. This one remains even more flexible, because you never quite calm sitting and therefore the spine is relieved, neck and Rückenverkrampungen remain at best completely.
This I can confirm!
2. Unfit it proved purely subjective but for me in size. In a recession, I read that 33 would be enough for a female Po, as a gentleman had a 36 cm diameter. About me: I am not greater than 1.60 and weigh less than 55 kg but I had trouble fully to sit on the pillow and wonder how other users do it. I sat completely centered, I still had to keep together with much effort my legs as they otherwise (even with firm footing on the ground) wanted buckling laterally from the hip, as if you completely relaxed sitting (campfire or youth seat-entertainment). This caused me exactly at the point where the thigh in the hip bones breaking in pain after 3 days so that I could no longer use the cushion itself by variety - although I then go into my back felt the full benefit.
3. Thus, it turned out to be unusable for me. A Problem solved caused a new - this can not be the solution.
For those whom it helps, I am pleased.