• Hydro Flask: Hydro Flasks are known for their durability and ability to keep drinks hot or cold for hours.
• Yeti: Yeti mugs are another popular brand that is known for its durability and quality.
• Simple Modern: Simple Modern mugs are a more affordable option that still offers good quality and performance.
• Contigo: Contigo mugs are a good option for people who are looking for a mug with a lot of features, such as a built-in straw or a temperature display.

No matter which brand you choose, you are sure to find an insulated thermal vacuum coffee flask that meets your needs and budget.

Here are some additional tips for using an insulated thermal vacuum coffee flask:

• Preheat your flask: Before you add your coffee, preheat your flask by pouring in boiling water and letting it sit for a few minutes. This will help to keep your coffee hot for even longer.
• Don’t fill your flask to the brim: Leave a little bit of space at the top of your flask so that the lid can seal properly.
• Don’t overtighten the lid: Overtightening the lid can damage the seal and make it difficult to open.
• Hand wash your flask: Most insulated thermal vacuum coffee flasks are dishwasher safe, but hand washing is always the best way to extend the life of your flask.
• Store your flask properly: When you’re not using your flask, store it in a cool, dry place.