I was using this with heat transfer, good quality hat, however the crease made it a little difficult to get the heat transfer to adhere. I did use a hat press however it is more for like a trucker style hat with a brim and no crease.
I like using these hats because they’re simple. They fit nicely in my embroidery machine cap hoop without the material bunching up. These hats keep their shape over time and my favorite thing ever is bumping into a customer wearing the hat and they swear by it.