Acrylic? You're kidding, right?
That's a nasty abuse of the phrase 'engineered'. Acrylic is strong (ish) in compression. It does not cope well with "pinch" type loadings.
This chair may work well enough for a specific user, due to the magnets being specified with various strengths at the four different supporting points. However, with a different user (due to differing center of gravity), the "sliding" column will probably not in fact slide due to off-axis loading. This may cause the column to be the only thing supporting the user.
Also, getting on and off will not be a fun exercise.
To me, it looks like it's been designed by the sales team :(