Small air bubbles may appear as a result of the manufacturing process, but this does not affect performance.Wash with dish detergent before first use.Strictly prohibited from torsion washing.Use a sponge with a handle.Do not use scrub brushes or cleansers.Do not use in dishwashers or dish dryers.Do not use in microwaveDo not freeze.No hot waterDo not use if damaged.Keep away from fire or heat.