Large Mens Hat/Neckwarmer

So my mother is forever trying to find a that comfortably fits my father. He's just got a bigger than average sized head apparently :P. Has anyone had success finding a hat and neckwarmer set for larger heads?

Here's the one she sent me for an idea of what she's looking for. She saw it on a Facebook ad for some mad price and that's the same one with different branding on Amazon.