- Name: Stainless Steel Coffee Cup - Capacity: 480ml - Colors: Gray, White, Black, Purple - Material: The cup body is made of 304 stainless steel. The transparent part of the lid is AS, and the black part is PP. Vacuum Insulation Layer for Heat and Cold Retention The vacuum design in the middle layer of the cup can keep heat and cold for about 6 hours. - Heat Retention Test: Fill the kettle with 95±1℃ hot water, and the temperature will be ≥33℃ after 6 hours of placement. - Cold Retention Test: Fill the kettle with 4±1℃ cold water, and the temperature will be ≤11℃ after 6 hours of placement. All the above data are measured by our company's personnel. Slight deviations may exist due to different test environments, and the data is for reference only.