Exploring the World of Vacuum Flasks Your Ultimate Guide

A vacuum flask, also known as a thermos, is a portable container designed to keep beverages hot or cold for an extended period. The inner and outer walls of the flask are typically made from materials such as stainless steel or plastic, which provide insulation and durability. Vacuum flasks come in various sizes, ranging from small personal flasks for individual use to larger ones suitable for sharing beverages.