✅SPECIFICATION 1. Material: Food grade 304 stainless steel 2. Size: 10.8 x 2.8inch/ 27.5 x 7.2cm 3. Capacity: 20 oz/ 600ml 4. 1 x Sport Water Bottle 5. Holding Time: 10 hours above 45 Celsius, 6 hours above 65 Celsius ✅NOTE 1. Add boiling water to the cup, do not use straws when drinking to prevent burns. 2. When adding boiling water to the cup, it should not be too full to prevent overflow and scald. 3. Avoid falling, collision or strong impact to cause the cup body to deform and affect the product's efficacy. 4. Avoid direct heating or placing it in a high temperature place. It is strictly forbidden to heat the product in an open flame, microwave oven, induction cooker, or dishwasher. 5. Do not add dry ice, carbonated drinks and other liquids that are prone to high pressure in the vacuum cup; do not add liquids containing alkaline and acidic ingredients such as soy sauce, soup, etc., to avoid corrosion of the cup. 6. When cleaning, please use neutral detergent and warm water to clean, do not use alkaline bleach, chemical wipes and other cleaning agents. 7. After filling perishable beverages such as milk, please drink and clean them as soon as possible to avoid deterioration of the inner tank. 8. Do not use it for other purposes except cold and heat preservation.