Attach a King Size Cone to your hat for easy and convenient carrying. It's sized to fit the King Size pre rolled cones by RAW, but should fit others just as well. If not, i can reduce the diameter.
For comparison, the brim on my hat is 3,8mm thick.
The model requires 2 8x3 mm magnets that are glued into the holes on the inside. Orient them to have them attract each other.
Without the magnets, the holder slides a bit too much for my taste, since the material can still flex a bit - the magnets are strong enough to stop that.
Glue in one magnet with ca glue for example and keep it in place with another magnet from the outside pulling it into the hole and make sure it's cured completely before putting in the opposing magnet, otherwise they will pull each other out and you'll get the glue everywhere - don't ask me how i know.