MCHIVER 20oz Insulated Tumblers* Food grade 304 stainless steel + food grade PP*Cup size: 8.6*17cm (3.3*6.6in)*Two different shaped straws with cleaning brush*Insulation layer and vacuum insulation layer, double-layer design locks in temperature* Keep warm for 6 hours, keep cold for 18 hours* Cap with vent valve, BPA-free and leak-proof* Easy to grab, easy to clean* Exquisite printing, personalized travel【Precautions】1. For minors, please use it under the guidance of an adult or after notification.2. Wash the inside and outside of the cup with neutral detergent in warm water before use3. In order to achieve the best effect of heat preservation and cold preservation of the cup, it is recommended to add hot water or ice water in advance for preheating or precooling. It is better to add ice cubes when keeping it cold.