The best position to sit is the next one. An ergonomic stool as the extension of our spine. Subconciously changing the position of the body, activating our back-muscles. The stool is higher than a chair suitable to be used at an office desk or table.
Offex Black Ergonomic Stool with Foot Ring [OF-WL-905DG-GG] (Metal)
This European, contemporary modern HAG Capisco chair is perfect for those with back problems. The HAG Capisco saddle is ideal for variable height worksurfaces. All HAG Capisco ergonomic saddle chairs ship free.
A CUP OF JO: My back hurts all the time, so my friend Gemma told me (and raved) about these ergonomic kneeling chairs. Apparently they keep your spine in proper alignment, strengthen lower back muscles and encourage good posture.
Flash Furniture Medical Ergonomic Stool with Chrome Base - BT-191-1-GG, Durable