Usage and precautions: *The applicable temperature of this product is 9 ℃ ~ 100 ℃ *Before use, wash with a mild detergent * This product can not be placed in the microwave oven. A strong impact will break the bottle. Not suitable for serving alcoholic beverages. It is not suitable to overfill, to avoid causing wine out. Do not store near fireworks or high temperatures * Use a soft brush or rag to wash the cup, or hand wash * Make sure to tighten the lid before putting it in the backpack