Shamrocks are a signal of good luck and of course St. Patrick's Day! Get the Irish-Mood Shamrock Clings to add a pop of color and design to your celebration. This item comes in a pack of 12. The sheet size of the clings are 12 inches by 17 inches. The clings work best when applied to a hard, dry, clean, surface. They can be used on windows or mirrors! Order your clings in bulk along with the rest of your party day supplies!