There are a number of reasons these professional-grade piping bags are considered the best on the market. The thin yet strong food-grade silicone is supple and slightly elastic, making it not only easier to fold and twist than traditional piping bag materials but also more durable – it won’t split or tear. Because they are heat resistant, the bags can be used with hot fillings (and reheated in a microwave). The inside surface is smooth to allow the filling to flow through consistently, while the outer surface is textured for sure grip.