Travel Tumbler, 11.8 fl oz (350 ml), Vacuum Double Layer Structure, Heat and Cold Retention, for Water, Coffee, Tea, White

1.Heat retention effect is a place with boiling water in the product at a room temperature of 6 degrees F (20 degrees C ± 2 degrees C), and when the water temperature reaches 95 degrees C ± 1 degrees C, it indicates the temperature of the hot water measured after 6 hours.lt;divgt;lt;/divgt; 2.Cold retention effect is a product with cold water at a room temperature of 6.9 °F (20 °C) ± 2 °C), when the water temperature reaches 4 ° F ± 1 ° C to indicate the temperature of water measured after 6 hours.lt;divgt;lt;/divgt; • LONG-LASTING INSULATION - Double-walled, Heat Retention: Above 145°F (65°C) (6 hours) / Cold Retention: Less than 8°F (8°C) (6 hours).tLEAKPROOF - Leakproof lid means you can toss this bottle into your bag without worrying about spills. • LEAKPROOF - Leakproof lid means you can toss this bottle into your bag without worrying about spills. • ULTIMATE PORTABILITY - Minimalist design is optimized for portability with a super grippable silicone sleeve and soft-touch lid. • COMFORTABLE DRINKABILITY: Wide-mouth, smooth and threadless ceramic lip has rounded edges to make on-the-go sipping feel like your favorite mug. • NOTE - Before filling your beverages, please add a small amount of boiling water (cold water) and preheat for about 1-2 minutes (precooling) to improve the thermal effect of cooling.