Sourdough; Any sutler should be able to fit you out with a cotton one. Wool may be tricky but C&D Jarnigan is a good bet. You might try John Ferry in Binghampton, NY his phone is area code 607-775-4434. He's open 9am-9pm and he stands behind his stuff no questions asked. He will ship and if he can't get it he very likely can tell you who can get it for you. Kindest reguards, Neil