Keep your hat in shape with this hat retainer. This retainer clamps open to the full width of the sweatband, preventing the hat from shrinking and tightening while your hat is in storage. Simply place the retainer at the sweatband and adjust to the appropriate size.
Note: This is not intended to stretch hats. Hat stretchers are more robust to withstand the pressures of stretching. This is to maintain the hats size and prevent shrinking.