Chair ID please  

nobody knows this design,...
nobody knows this design, really??

cool chair
Interesting construction. I like the cubby under the seat and seeing its
form exposed in the open sides. And the use of contrasting colors. Looks like
something Google would use at their headquarters around the pool, or
ping-pong table or volleyball net!
I'm surprised it does not have a mark imprinted in the mold casting.
What country are you from?

scotland
I found it in France, and the only info I could get from the seller is that he bought it in Scotland. There is no label or any mention on it. According to the kind of plastic used, I would say this is from the 90's.

That
is totally cool. Two halves brought together. The cubby bubble may assist in a springy support of the seat ?
Koen, where are you ?

Still searching... Any other...
Still searching... Any other ideas??

It's a canyon chair by One...
It's a canyon chair by One Foot Taller, based in Glasgow. They made 'em in a few colours. Now out of production.
http://onefoottaller.com/projects/Canyon_Chair/

Fantastic, thanks !
Fantastic, thanks !