Redberry stainless Thermal Flask

A stainless steel thermal flask is a durable and insulated container designed to keep beverages hot or cold for extended periods. It typically consists of double-walled stainless steel construction with a vacuum layer between the walls, which minimizes heat transfer by conduction and convection. This design helps maintain the temperature of the liquid inside, whether hot or cold, making it ideal for carrying coffee, tea, water, or other drinks on the go.