About this item Piping bag work with standard decorating tips. Pastry bags can work with any decorating couplers and tips you like. Made of food grade silicone, FDA approved, BPA free, reusable, durable, flexible and practical. Can be easily trimmed to fit your tips. with smooth interior for easy squeezing, and rough exterior for better gripping. Easy to clean, Dishwasher safe.Great for cake decorating, icing, and frosting cakes and other desserts like cookies, biscuits, chocolate and pies Can be used with or without nozzles. Smooth interior for squeezing easily, rough exterior, better for gripping. Suit for any type of decorating tip..