How can you make a fitted hat smaller?

To make a fitted hat smaller, you can try washing it in warm water and then drying it on low heat, which may shrink the fabric slightly. Alternatively, you can use fabric tape or Velcro strips on the inside band to adjust the fit. Another option is to take it to a tailor or hat shop for professional resizing. Lastly, wearing it with a thick headband can give a snugger fit temporarily.