(... I have an unusual chair or rather a stool. It is a workbench stool bought at local motor spare parts outlet (males in my family are all in the motor trade) on sale. has like Harley Davidson motor bike saddle seat. all adjustable thingy's, back, height seat etc., no arms, good solid base with foot rest and wheels... )I posted this not long after joining the board, I bought it because my bench at the time was quite high and this stool has a higher raising height. I now have new, lower bench and still use it. The seat keeps your legs apart, which makes you sit up straighter = less back and shoulder aches.