Material: Bottle: adopts high quality dual-layer stainless steel; Cover: PP resin (max. 120'C heat-resistance temperature, min. -10'C cold-resistance temperature); Sealing ring: silicone (max. 120'C heat-resistance, min. -10'C cold-resistance) Heat preservation time: When indoor temperature at 25'C, filled with 98'C water, kept in covered state, it can preserve heat for 6 hours with water of 70'C or above, 12 hours with water of 55'C or above. Adopts unique koala vacuum technology and high-tech leak detection equipment to ensure the bottle with excellent heat preservation effect.
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