Flasks have a double-wall construction with a vacuum layer between the inner and outer walls.
Made from durable materials such as stainless steel, which are resistant to corrosion, impact, and wear.
Flasks can maintain temperatures close to the initial temperature for up to 8 hours or more, providing long-lasting heat retention.
Equipped with airtight seals or lids that prevent air from entering or escaping the flask. The airtight seal helps maintain the vacuum insulation and prevents heat transfer through air convection, ensuring optimal temperature retention.