This is designed by American chairmakers Peter Galbert and Curtis Buchanan in partnership with Galen Cranz, an expert in The Alexander Technique. The goal was seating that would make sitting upright easier and to allow the spine to sit properly aligned. The stool achieves this by tilting the pelvis forward to reflect a position more akin to standing, rather than sitting and allowing the natural curve of the spine to be maintained.

It is unusual in that the surface of the stool is not flat but slopes down at the front. The shaping of the surface (saddling) allows it to conform to the body’s curves and so it is much more comfortable than a flat stool. 

This stool departs from the original design with more shaping in the seat and a slightly deeper seat, front to back. I believe this improves comfort more. 

The stool uses typical modern Windsor Chair joinery. The tops of the legs are tapered and fit onto similarly tapered holes cut into the seat. These actually tighten when you sit on the seat and so should never become loose in normal use. The wedges are then driven into slots cut into the tops of the legs to expand the leg to lock it onto place. The joints are glued but no screws or nails are used in the construction.

The legs are made from straight-grained wood, with the grain running from one end to the other. This gives maximum strength and allows the legs to be made slimmer and more elegant.

Stretchers are used to push the legs apart. They are cut to length once the legs are fitted into the seat. They are cut longer than the measured distance between the legs. This introduces tension into the legs as they are finally driven home into the seat during the glue-up. This makes the structure more rigid as it is under tension. 

The pictures here show two examples that both have milk painted legs. One is barn red used as a wash so that the grain shows through boldly. The other is pumpkin colour and applied at a thicker mix to give a solid colour. They also show two different legs designs. The double bobbin design and the straight leg with a taper below the stretcher level.