The Hat Jack Hat Maintainer is the ideal way to maintain the size of any hat while storing. The redwood absorbs moisture, while the metal turnbuckle adjusts the Maintainer to the perfect size. Keeps your hat fitting perfectly and also allows you to stretch it out a bit if it tightens up.
S = Child's through 7 1/4 Long Oval
M = 7 1/8 through 7 1/2 Long Oval
L = 7 1/2 through 7 7/8 Long Oval