1. insulation: The thermos flask features double layer stainless steel vacuum insulation, keeping hot drinks warm for up to 10 hours and cold drinks cool for up to 16 hours. To maintain insulation performance, avoid impacts and dishwasher use. 2. Leak proof and practical: The insulated jug comes with a heat resistant silicone sealing ring, ensuring a tight seal to prevent leaks even when tipped over. The lever allows one handed pouring, and the U shaped spout of the 1.5L thermos flask prevents splashing. 3. Tea filter and non slip: The thermal teapot includes a removable tea filter that effectively catches tea leaves. The non slip silicone base of the coffee pot ensures stability and prevents tipping, making it ideal for home or office use. 4. Specifications and note: The thermos flask with tea strainer is made of quality 304 stainless steel, ensuring safety and durability. The lid of the thermal coffee pot is crafted from PP and a waterproof silicone ring, completely BPA . The touch display on the lid shows indoor temperature. The battery is non removable and has a lifespan of approximately three years under normal conditions.