Wooden hangers are perfect for a heavy wool or leather coat. Raincoats may lose some of their ability to shed water after a trip to the dry cleaners. Ask for a water-repellency treatment each time the coat gets cleaned. Spot clean leather or leather-like coats with a sudsy sponge, but don't use solvents or shoe cleaners. Oil soap may be used, but mix with water according to the label directions.
Genuine leather needs professional cleaning by a specialist.
Imitation leather can be cleaned by a local dry cleaner. With the right care, a good coat can last 10 or more years.