Our expert says:
There was a stall demonstrating these chairs at the recent Natural and Organic conference in Cape Town, so the organisers may be able to put you in touch with the manufacturers. My sister and I tried out a few chairs: I found them pretty relaxing, but she said she didn't like the sensation she got of her 'brain vibrating'! The conference was organised by Shows and Events and the Journal of Natural Medicine.
But this is not really my area - please try posting your query on the Physiotherapist's or Chirodoc's forum. I suggest also asking them what they think about these chairs i.e. do they have any real health benefits/ are they good for your back etc?
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