Piping decorations on your treats is easier than you think with these Wilton 12 in. disposable decorating bags. Great for using with buttercream royal icing meringue batter and more these plastic piping bags are sturdy and comfortable to hold and use. They can be prepared with or without a coupler and work with standard and large Wilton piping tips. Use them to pipe swirls on your cupcakes or a fun shell border on a birthday cake. You can even use them for savory dishes such as filling pasta shells or making deviled eggs. Once you re done simply remove the tip and toss for easy cleanup! Each plastic bag holds about ½ to 1 cup of traditional buttercream frosting.