This easy-to-use, fully adjustable stretcher enables the hat to be stretched up to 1 - 2 sizes* Position the hat stretcher inside the inner rim of the hat and carefully rotate the stem to expand. Leave the stretcher in position for at least 12 hours and repeat the process if necessary/as required.
* Results will depend on different factors such as what the hat is made from, its age/condition, and by how far the hat may have already shrunk.