Product capacity: 350ml Product material: A new PP material/bottle Liner: Inside and outside both use 304 stainless steel Instructions: Before using the product for the first time, please clean it with a mixture of water and moderate amounts of neutral detergent, and then rinse with fresh water can be. Don't clean it with alkaline detergent. For the best results of heat preservation and cold insulation, please add moderate hot or cold water for preheating or pre-cooling before use. Adding ice cubes to keep cool is better. In order to ensure the function of the product and prolong sevvice life, users should avoid collision or strong inpact. Don't use a microwave oven or other heeating equipments to heat the product. Remember to keep away from open fire. No dishwasher is allowed. Don't overfill your cup with boiling water. Don't use the cup to keep dairy products or baby food warm for a long time. When it is used to hold perishable drinks like milk, wash it immediately. Don't hold salty liquids in the cup. Don't hold expansive objects like dry ice and carbonate beverages in the cup. Maintenance: During long perids of non-use, wipe up the glass to keep it dry. Don't use cleaning products like basic bleaching agent,metal agent,chemical cleaning cloth,gasoline, metal cleaning ball and so on.