Spot clean, hand wash and air dry.
ALL headcovers (rather you buy ours, or another brand) should not be machine washed and machine dried. Headcovers (non leather) should be spot cleaned or hand washed, even if it says you can machine wash, don't! The headcover fabrics are treated with UV, DWR and PU coatings. A washing machine will remove the coatings. Never put a headcover in a dryer, let it air dry. The headcovers have batting and interfacing inside, not meant for machine drying.
The same cleaning instructions apply to our wool headcovers. We recommend Woolite.