12 PCS Hat Size Reducers, Hat Inserts to Make Smaller, Felt Cap Size Reducer Tape Black and White Hat Sizing Tape Hat Size Reducer for Hats Caps Sweatband

Excellent product for helping my hat fit properly. Used one at the front and one at the back. Stuck in perfectly under hat band.

I like the fact my hat now fits, the inserts were a little thick so I only used one. Very pleased with the result.

Easy to use and works well.

Did the job.

The sizes are too far apart so either have to buy too small or too big

the 3M tape is almost impossible to remove, and if you can get it off, it takes the surface of the reducer with it, so it's not usable

I’d left a hat that I’d bought too late to return to store so thought I’d give these a try & they worked a treat

Worked well to tighten my Tilley hat and feels comfortable Incidentally a strip of it makes a great fly patch for fly fishing . See photo ! Also can be used to make home made fly boxes