Hat comes with a Free strip of Hat Size Reducing Foam Tape. Use to reduce the hat size if needed. To reduce size of hat by about a half inch: peel away covering from adhesive back of foam strip. Press the foam strip into the front interior rim of hat. To reduce size of hat by about an inch - cut the strip in half. Apply one half of the strip to the FRONT interior rim of hat and apply the other half of the strip to the REAR interior rim of hat.