A Thermos flask is a specially designed container intended to maintain the temperature of liquids, ensuring that hot beverages like coffee or tea stay warm while keeping cold drinks, such as iced water or juice, refreshingly cool. Its unique double-walled construction features a vacuum insulation layer between the walls, which minimizes heat transfer through conduction and convection. This advanced insulation technology allows the Thermos to retain the temperature of its contents for extended periods, making it an ideal companion for outdoor activities, travel, or daily commutes. Whether you’re hiking, heading to the office, or enjoying a picnic, a Thermos flask provides a reliable way to transport your favorite foods and beverages without compromising on temperature or taste.

Illustrated by: Hsinyi