[lugerholsterrepair]

Ed, Providing they are not moist before putting them in they should be OK. Holsters and other leather items adjust to whatever moisture might be in the air. Actually sealing off air might inhibit growth of organisms or mold. I have a food sealer that sucks all the air out of a bag. That might kill off any mold. If I can find a moldy holster somewhere I should try it out. Wonder how long you would have to leave it in an airless environment for it to be effective? Jerry Burney