silicon bottle stopper 1.100% Silicon, green material 2.Non-toxic&Hot sales 3.High quality and competitive ... Any color is available.5.Waterproof,high and low temperature,oil resistance and safety.1, Material: 100% food ... etc.5, Property: high/low temperature resistance, oil and fuel resistance, water resistance, weathering resistance, Ozone ... or ODM is welcomed. durable silicone bottle stopper cap