Knitting

I’ve no doubt one of the talented people here could replicate the hat but it’s worth mentioning that if the hat wasn’t originally knitted by hand, a replica won’t feel the same. Machine knitting produces a thinner, stretchier material. It’s probably more durable too - certainly nothing I’ve made would last 20+ years with frequent wear, but that might just be a reflection of my knitting skills! If it’s the feel of the hat you like more than the look of it, I’d recommend buying a new hat as someone else suggested. If it’s the look of hat you like so much I imagine someone will be able to make a replica but they’d likely need the original hat while making it for you. Good luck!