Material: Professional grade 304 double-layered stainless steel double-wall vacuum insulation. Durable and prevent bacteria growth. also keeps drinks odorless.Appearance: The coffee thermos mug is easy to hold with environmentally friendly non-slip scouring material. You also don't worry about the exterior surface being easily scratched and cleaned.Insulation: It is designed to ensure your hot and cold drinks stay at ideal temperature for 6-8 hours. Double vacuum stainless steel insulation ensures that temperatures are maintained.Function: When you are driving. in the office or at home. if the reusable coffee cup tilts on the floor. it won't spill or run away. The cover will remain airtight.Guarantee: If you have any questions about the products. you can contact us any time. We will help you solve the problem on time. We hope you will have a pleasant shopping experience.