Bottles

A vacuum bottle, also known as a thermos or insulated flask, is a container designed to keep beverages hot or cold for an extended period of time. It consists of two walls with a vacuum or insulating layer between them to minimize heat transfer. The inner wall is typically made of glass or stainless steel, while the outer wall is made of a durable material such as plastic or metal. The vacuum insulation helps retain the temperature of the liquid inside, keeping hot beverages hot and cold beverages cold for several hours. Vacuum bottles often feature a screw-on lid or stopper to prevent leaks and maintain the temperature. They are commonly used for carrying and storing hot or cold drinks while on the go, making them a popular choice for outdoor activities, travel, or simply for daily use.