SAFE MATERIAL: The thermos mug is made of high quality 304 stainless steel, solid and durable, anti-oxidation, corrosion resistant, odorless, you can drink safely from our water bottle. Double-wall insulation: Thanks to the double-wall insulation, the bottle keeps drinks cold for 12 hours and hot for 10 hours. Perfect for hot or cold weather. With excellent insulation, no matter the temperature of the liquid in this thermos, it does not sweat or heat up. 100% LEAKPROOF: Thanks to the silicone seal, the lid is completely airtight so that the contents of the bottle do not leak during transport. Each water bottle is absolutely leak proof with an easy to open screw cap. It never sweats or heats up, regardless of the temperature of the liquid in the bottle. The lid also has a plastic handle for holding or hanging. MULTIPLE USES: With double-walled suction technology, this mug is stylish and durable. It's the perfect companion whether you're on the go, at home, in the office or on the go. This very popular bottle can be used at home, at the gym, while traveling, in the car, at the beach, camping, hiking, at school or at work. Quality Guarantee: High quality product, practical design and lifetime service make this stainless steel water bottle a perfect gift for mothers, friends , family and children.