Dinosaur Party Design-Your-Own Sticker Scenes. One package contains 12 Design Your Own Dinosaur Sticker Scenes. Travel back in time and arrange dinosaurs on landscapes for prehistoric fun! Includes 12 paper 11" x 8 1/2" backgrounds and 12 sticker sheets. Stickers are repositionable and acid free. (34 stickers per sheet). Enough for 12 guests.