Features
extended period, thanks to its double-walled insulation.
Construction: The exterior of the vacuum flask is typically made of durable materials such as stainless steel or plastic, while the interior is usually made of glass or stainless steel.
Vacuum Insulation: The vacuum layer in between the two walls of the flask minimizes heat transfer through conduction and convection, allowing the flask to maintain the temperature of the liquid inside.
Leak-proof Cap: The cap of the flask is designed to be leak-proof and easy to open, ensuring that the liquid stays inside the flask and doesn't spill.
Size Variety: Vacuum flasks come in a range of sizes, from small enough to fit in a pocket to large enough to hold multiple cups of liquid, making them versatile for different needs.
Versatility: