These softball stickers are made of vinyl that is waterproof, heavy duty, ultra thick and UV resistant. Those other stickers you find on Amazon will not stick to A LOT of surfaces because they use an inferior adhesive. We have stickers that stick to painted cinder block. Those other guys fall off the refrigerators a few weeks after application, and their stickers are easy to tear. You will not find a thicker, more durable, better designed sticker on the market.
These stickers are perfect for: