1 X Sanrio Hello Kitty 27 Hologram Lenticular Valentines Day Cards 3 Sets of 9 Different Hello Kitty Designs! Tilt cards to change image! Cards are about 1 1/2 inches by 2 1/2 inches! When addressing the cards works best with a pencil or permanent marker Selling out in stores quickly, if you can't find them in your local stores, buy them here!