How to Shrink Fitted Hats

Don't let a loose, oversized sports cap ruin your enjoyment of the game -- custom-fitted hats are so-named for a reason. Through regular exposure to sweat and sun over time, they'll shrink down to your size, but if you can't wait that long for a comfortable fit or bought a hat that's a whole size larger than your head, a little extra heat can go a long way.

100 Percent Wool and Cotton Caps

Wool and cotton fibers shrink naturally when wet and dried and conform to whatever shape they're given, so use your own head like a hat block to get a custom fit.

100 Percent Polyester Caps

Some fitted hats are made from polyester instead of wool or cotton. Unfortunately, polyester does not shrink unless subjected to extremely high heat, which can damage hats. Steaming and drying the crown repeatedly or soaking it in hot water may have some effect.

Heat exposure may also do nothing. Some polyester fabrics have already been preshrunk in high heat scenarios, and will not respond at all to further heat shrinking methods. You may be stuck with the hat size you have.

Cotton/Polyester Blend Caps

Cotton/poly blends shrink somewhat less than 100 percent cotton caps, depending upon the ratio of cotton to polyester. If a cap is 80 percent polyester and 20 percent cotton, you may only be able to shrink the hat a small amount. The larger the cotton percentage, the more easily you can change the hat size.

Shrink cotton/polyester blends just as you would a 100 percent wool or cotton cap. Hot water, rather than warm water, may be more successful if the polyester percentage is high.

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