【Double Insulation】 - This 23oz (680ml) tea warmer bowl comes with double vacuum insulation, stainless steel insulated outer bowl and food grade leakproof inner bowl. Upgrade the double thermal insulation bowl to greatly improve thermal insulation. It keeps food hot for 4 hours or chilled fresh for 6 hours. 【Double Sealing】 - Screw cap with inner bowl sealing ring, 2 loops on the outer insulated bowl ensure this food bowl is 100% leakproof. Don't worry about leakage!If you feel that your food is not hot enough before lunch, you can pour some hot water into the stainless steel bowl, and then place the inner bowl into the stainless steel bowl to heat the food in the inner bowl. 【Safety Guarantee】 - All parts of this insulated bowl are made from food grade materials: 304 stainless steel, heat-resistant PP bowl and thickened PP lid. No harm to your health! The non-slip silicone base prevents our food bowls from shifting or tumbling. We value the safety and health of our consumers. 【Instructions for Use】 - Before filling the hot food, please pour hot water to preheat for 10-20 minutes. Or place it in the fridge to pre-cool it for 10-20 minutes before filling it with cold foods like yogurt and salads. 【EXCELLENT WORKMANSHIP】 - Our factory has been specialized in thermos since 1965. Over the past few decades, we have improved our technology, machinery, innovations and designs. We have also filed several of our own patents. Any questions about our products, please contact us immediately, we will reply and provide service within 24 hours. › See more product details