The original felt hat was credited to John Stetson. The original use required the hat to be constructed from water-resistant fur felt. Unless you are a real cowboy working outside, there is not much need in purchasing a water-resistant beaver or muskrat fur felt hat. This would be a $700.00 100X hat. (100% beaver fur)
A 10X hat is 50% beaver fur.
A good quality rabbit fur felt hat will do fine.
This would be a 5x all rabbit fur felt hat.
Cowboys don’t wear wool hats. They don’t hold their shape.