it is pretty robust wool, dry cleaning will melt any plastics or composites. These tunics in use were typically boiled in soap at field laundries and then ironed. maybe not the best idea now. I have used woolite in the bathtub and dry it on a towel outside for a while. pretend it's a girlfriends cashmere sweater. Go over it with a cool iron, or a home clothes steamer to give it a good smooth finish with no shine. don't do any pressing before you remove the majority of the coal dust first, a vacuum is a good idea. BTW, moth larvae actually eat the proteins deposited on wool fibers by sweat etc., not he actual wool on purpose - so clean is best for long term preservation. Nice tunic too!