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How to wash fitted hats
Read the tag.
The tag will supply you with many of the instructions you'll need for washing your hat, including whether or not it's washing machine safe, what temperature of water to use, what kind of cleaning solution is most effective, and how to dry your hat after washing. Look for the hat's tag on the inside; it should be in the back, near the headband.
If the tag has no instructions, or you cannot find the tag at all, follow the instructions below. Examine the material your hat is made from.