I saw another thread about this but it generated no interest and didn't have a link to the actual website. I'd have thought this could be amazing for folding bikes, and there's both 16 and 20" wheel versions. The 1 kg weight appears to be for the 28" version, so the 20 and 16 must be sub 1 kg.
Then there's the kindshock range of suspension seat posts and a remarkable looking suspension stem.
I've googled for retailers and found nothing except one shop in Germany that does the forks and a few European ebayers who sell Kind Shock suspension seat posts that don't match the ones on that site.