Cowboy Hat

Felt Cowboy Hat History and Custom Hat Makers .go here

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.