Pierre Cardin Vintage Brown Hat Size Small Flat Cap

Pierre Cardin Brown Flat Cap Vintage Retro Hat Size Small Large button top center. Hat is a little misshapen but it is old. This hat is tight on me and I consider myself to have a fairly small head. I believe it to be men's wear but may be meant for a child? *Looking for measuring tape of sorts so I can be specific, please be patient ☺️