Shapers Image 4 Count Baseball Crown Shaper Inserts for Fitted Caps Snapback Hats, Washable Reusable Liners

Helps to keep the hat shape longer.

They work well with unstructured hats and hold up to sweat

Works well to maintain shape of the hat, but even in 50 degree weather at work while moving it causes a greenhouse effect where sweat will condensate in you head and it won’t evaporate, the condensation is so great you will have a damp scalp as if you gotten wet by rain. Idk it did the job to keep the hats shape but I never expected this outcome. Longer use could cause acne from the build up of sweat.

These are awesome! I thought I would have to make my own... so glad I did a search first and found these. No more caved-in caps! Love!

This addition to keep the hat shaped worked perfectly, couldn’t even tell it was in the hat. Comfortable, stable and looks great. Exactly what I was looking for stability and fit of my hat.

Good product, works well and can be trimmed if needed. I recommend.

Allows the sweat to come through

It worked well on hats I had that needed some support to hold their shape.

I bought these for packing, they work great for that and if you stuff some shirts or something in your hat as well it will make the journey in a suitcase or whatever unscathed. Surprisingly though I now just keep them in while wearing the hat too. So I think that means they're pretty good