500ML Double Wall Stainless Steel Coffee Thermos

Description100% brand new & high qualityMaterial: stainless steelSize:about 20cm x 8cmColor:White, black, brown, goldCapacity:500ml1. Before using the new product, you must use boiling water (or add a little detergent) to wash it several times, and conduct high temperature sterilization.2. Before use, please use boiling water (or cold water) to preheat (or pre-cool) for 5-10 minutes, so that better insulation effect.3. Please fill the water in full, so as not to tighten the lid, boiled water overflow scald.4. Drink slowly when hot drinks to avoid burns.5. It is not advisable to hold carbonated drinks such as milk, milk products and fruit juices for a long time.6. After drinking, tighten the lid to ensure it is clean and hygienic.7. When cleaning, use a soft cloth and food detergent diluted with warm water for cleaning. Do not use alkaline bleach metal melon cloth, chemical wipes, etc.8. The inside of the stainless steel cup sometimes produces red rust spots due to the influence of