Ensure the perfect fit with the Maria George Adjustable Hat Foams. Sold in a 4 Pack, these hat foams can be inserted into the inside of a hat to ensure a snug fit, whether you only need one, or if you require all 4 to create the perfect fit. These foams will reduce the size of your hat, for a more desirable fit or to ensure it is secure on a windy day. The foams can be added to the internal hat band, or by using the adhesive back to secure the foams to the hat.