Durable and adorable than usual glass wine cups Material: the champagne flute is made of 304 stainless steel and the lid is made of ABS, easy to cleanse with water washing and drying Function: good at keeping the temperature of both hot and cold in several hours (6-12 H), treated with a special process to avoid fading and yellowing, provides a fresh taste Modern stemless shape design: has a smooth appearance and is easy to clean by cloth, the lid is designed with a straw hole for easy sipping with straws and helping reduce splash Many uses: the double-insulated flute tumbler can be applied as wine cups, champagne cups, or water cup, suitable for parties, pools, picnics and boats We provide 18 colors for you to choose from, I believe there is always a color you like!Specification: Product name: eggshell cup Capacity: 12oz Material: food grade 304 stainless steel inside and outside Size: Height 11.2cm, Diameter 7.8cm, Bottom Diameter 6cm Net weight: 176gPrecautions for thermos cups 1. Please avoid impact and falling, so as not to break the thermal insulation cup body and affect the thermal insulation performance. 2. Do not place it next to the heat source, so as not to affect the function. 3. Keep it out of reach of children to avoid burns. 4. Do not put the cup directly into the microwave for heating. 5. Do not add dry ice, carbonated drinks and other liquids that are prone to high pressure, and do not add salty liquids such as soy sauce and soup to avoid corrosion of the kettle body. 6. After putting in perishable beverages such as milk, please drink it as soon as possible and wash it to prevent the liner from rotting after deterioration.Maintenance method of thermos cup 1. When not in use for a long time, the inner tank should be kept fully dry. 2. In order to prevent odor or stains, clean it after use and make it fully dry. 3. Since the use of impure water will leave red spots similar to rust, it can be fully cleaned by soaking in warm water and diluted vinegar for 30 minutes.