This appears to be an error in the description, as both hats are from the American Buffalo Collection from Stetson, and are both made of a buffalo fur blend. ( I own both, so I was able to put them right next to each other and check)

This series of hats is a great choice for the area, as they hold up well against rain, but just like any other steam shaped hat made of buffalo, beaver, or any other kind of fur, the rain here will eventually cause the hat to deform, and droop. you can protect against this by using a rain repellent, and you can also send the hat back to stetson to be reshaped when it finally begins to droop too much.