I got this cap from a collegae who brought it from the Belgian Air Force days
This cap was handed out to promote the French fighter jet Rafale as a possible option to follow up the F16 in the Belgian Air Force.
See also the F35 Cap and the Eurofighter Cap:
F35 CAP
Eurofighter Typhoon Cap
This CAP is made by Taylor Made Designs UK https://www.taylormadedesigns.co.uk/
The picture below shows a model of the Rafale on display at the Dassault Aviation stand at Belgian Air force Days
Partage