Insulated Vaccum Flask. 1000ml

Insulation:

They utilize a vacuum between their walls to minimize heat transfer through conduction, convection, and radiation, thus maintaining the temperature of the contents. 

Temperature Retention:

Some bottles can keep drinks hot for up to 48 hours and cold for up to 24 hours. 

Materials:

Often made of stainless steel, they are durable and designed for long-term use. 

Sizes:

Available in various sizes, from smaller individual bottles to larger containers that hold several liters. 

Usage:

They are suitable for various purposes, such as keeping coffee hot, or water cold during travel, at work, or at home. 

Additional Features:

Some models may include a handle for easy carrying, and a cup for drinking. 

Vacuum bottles are a popular choice for those needing to maintain the temperature of their drinks for an extended period.