1. Do not use bleacher containing chlorine, freeze the product or store carbonate drink in the bottle. 2. Not for keeping dairy products or infants' food warm for a long term (due to danger of germ generation). 3. It is suggested to carry hot drink with temperature of not over 50℃ to avoid getting scalded. To get the best use effect, make sure the cover is fully sealed when using the product. 4. Do not carry much hot drink to prevent liquid overflowing.