Thermohauser of America has been providing professional baking tools to professional bakers for over 85 years. They bring to you multiple different styles and sizes of pastry bags. One of which being the wunderbag pastry bag, this be is heavy duty and is designed for extended use. It is amazing how many different designs you can create with this pastry bag and your choice of piping tip. If you can imiagine it, you can create it.