This Hat Stretcher is simple and easy to use. When finished wearing your hat, place the Hat Jack inside your hat and turn the turnbuckle to size the Hat Jack snuggly inside the sweatband of your hat as a retainer. With the tapered edge, the Hat Jack will fit perfectly with your hat allowing you to adjust your hat to exactly how you like it. Doing this keeps your hat perfectly sized however you want and prevents shrinkage. Sweat causes the sweatband to shrink and leads to expensive fixes and frequent replacements. The Beastmaster Rodeo Hat Jack prolongs the longevity of your hat. The Hat Jack is made from top grade kiln dried wood for durability and absorbs moisture and odors.