DSV Hats

Hello to all you knitting and crocheting enthusiasts.
I’m looking for the knitting or crochet pattern for our biathletes’ hats.
What do you think?
I was guessing half double crochet, but that doesn’t really seem right since it’s a knitted hat.
Does anyone have any ideas?
Thank you.

I think a picture would be helpful...

Here’s a close-up of the pattern—thanks to oksik for the photo tip:

Try searching Google for “Bosnian crochet.” That might be what you’re looking for.

No, that’s not it. But thanks anyway for your help.
Could it be a knitted beanie in a seed stitch pattern?
In that case, the brim wouldn’t match, but the rest is very close to the pattern.
Best regards, Andrea