Blue poison dart frogs fridge magnet cool 3 1/2" x 2 /18" name card size rectangular magnets. Our magnets are of an extremly high quality. All of our magnets are made of 100% industrial strength caliber vinyl with an aggressive permanent adhesive magnets. All of our magnets are splash proof and are suited for indoor use only. It measures 3 1/2" x 2 /18" name card size .