This pastry/piping bag is disposable making cleaning up easy. The inside has a smooth layer made for easy opening and filling of the product. It is also made with a sturdy three-layer film that is heat resistant up to 200 degrees F. Pastry / Piping Bag, 21-5/8" L, disposable, polyethylene, very sturdy 3 layer film, heat resistant, box of 10. Green