You can not just throw these hats in the washing machine. That is a sure fire way to ruin them. You can add them to the washing machine if you first put it in one of those plastic doo dads meant for hats. I personally don't care for those, especially when washing vintage hats. Some of the older hats may be made with cardboard bills and letting it soak in water for any amount of time will ruin it. I did a little research on the best way to clean snapbacks and this is the way that seems to work best for me.
