Uncle Dunc's magnets are great for putting on your fridge, your car, and any other metal surface! If you don't want to make the commitment of putting a sticker somewhere, a magnet is a great alternative! :-) Mine are high quality, water-proof magnets that hold on tight! Our magnets vary in size but typically measure 3" each (the longest side is 3"). Check them out at our Etsy store today!