I used Quince Osprey in Storm. I ALWAYS mess up my husband's hats, not sure what that's about. This one came out huge since I made the largest size and was getting less sts per inch with the Osprey on a size 8. I wanted it to come out bigger, but I guess I overcompensated. The happy ending is that I washed and dried it and it felted just enough AND turned out exactly the right size. He loves it! Phew.