This is a complete set of pokemon badges, individuals can be found elsewhere on the site
Each of these badges can be attached to the garment (or corkboard) of your choice, as they have tie-tack pins on the back. Backing options shown in last photo.
They are each about an inch in diameter. Badges are water-resistant, but not entirely water-proof and should not be submerged.
The badges are made of plastic (polystyrene, to be precise) and the optional tie tacks are brass. The badges are 1/16" thick, about the same as a nickel. They will be shipped in a necklace box to protect them from damage, and for easy storage. Blank badges do not come in boxes, as there is no way to position them.