Pipe icing, frosting, batter and more with these standard 12 in. Disposable Decorating Piping Bags. Great for piping whipped cream, buttercream frosting, royal icing, ganache, or meringue batter, these decorating bags are designed for quicker and easier decorating. You can even use them for savory recipes, such as filling deviled eggs, making twice baked potatoes or filling stuffed shells. These piping bags work best with standard Wilton piping tips (sold separately) but can also be used with large piping tips or without a tip. When you're done, simply toss the bag for easy, stress-free cleanup. One package includes twelve 12 in. decorating bags.