Vacuum Flasks & Insulated Bottles

Keep your drink hot or cold through every adventure

Whether you are out on a long hike, a day trip or a cold winter tour, a reliable vacuum flask is an important part of your packing. Primus vacuum flasks are designed to keep your drink hot or cold for a long time, with durable materials and effective vacuum insulation that works for both outdoor life and everyday use.

A vacuum flask should be easy to fill, easy to drink from and durable enough to come along in your backpack. For longer trips, cold mornings and outdoor breaks, a good vacuum flask gives you the option to have coffee, tea, hot chocolate or another drink ready when you need energy and warmth.

When your drink needs to come along during commuting, shorter outings or days when the bottle is often used directly from the hand, insulated bottles can serve a different purpose than a classic vacuum flask, as the format is often more convenient for everyday use.

Durable vacuum flask with long-lasting temperature retention

Primus vacuum flasks are made from stainless steel with double-wall vacuum insulation. The construction reduces heat loss and helps your drink stay at the right temperature for longer, whether the contents are hot coffee in winter or a cold drink on warm days.

The durable design makes the bottles tough enough for demanding conditions, while also being practical to use at work, in the car, at the campsite or during a hike. Lids, openings and formats are designed to make the bottles easy to handle even when the weather or pace changes.

Benefits of Primus vacuum flasks:

• Effective insulation that helps your drink stay hot or cold for a long time.
• Durable stainless steel construction for both everyday use and outdoor life.
• Practical sizes that work in a backpack, bag or car cup holder.
• Thoughtful lids and openings that make the bottles easy to fill, drink from and clean.

Vacuum insulation in the flask

Primus vacuum flasks use double-wall vacuum insulation. Between the two walls of the bottle is a vacuum that reduces heat transfer, helping hot drinks retain heat for longer and cold drinks stay cool over time.

This makes the vacuum flask useful in many different environments. In winter, it can keep your coffee hot during a break, while in summer it helps preserve a cold drink when temperatures rise. The same principle makes vacuum flasks practical in the mountains, in the forest, when travelling and in everyday life.

Choose the right vacuum flask for your needs

Primus vacuum flasks come in several sizes and designs for different uses. A smaller flask works well for coffee on your way to work or a shorter trip, while a larger flask provides more volume when several people are sharing a hot drink or when the day outdoors becomes longer.

The choice also depends on how the bottle will be used. A classic vacuum flask with a cup in the lid is well suited to longer breaks, while other solutions work better when the drink needs to be easy to drink during movement. For car trips, commuting and shorter stops, travel mugs work especially well when coffee or tea needs to be easily accessible without pouring it into a separate cup.

Popular models:

• Classic Light Termos: classic stainless steel vacuum flask for everything from short outings to longer days outdoors. The lid works as a mug, making it practical for breaks, coffee stops and cold mornings.
• Basalt Thermo Bottle 0.75 L: robust vacuum flask for demanding outdoor life, winter trips and longer adventures where equipment needs to withstand tougher use.
• Food Vacuum Bottle 1.2L: larger insulated flask for food, soup or hot drinks. The robust stainless steel construction makes it useful for longer outings, cold days and trips where more volume is needed.

Vacuum flask and hot food outdoors

A vacuum flask is primarily made for drinks, but the same need for temperature retention often applies when food is brought outdoors. Soup, stew, pasta or another hot lunch requires a container with a wider opening that is easy to eat from and clean. For meals in the mountains, in the forest or during the workday, food flasks are better suited than regular vacuum flasks.

Together with the right cooking equipment, the vacuum flask becomes a practical part of a complete outdoor kitchen. A hot drink can be prepared in the morning and kept ready during the day, while food can be packed separately when the trip requires more energy than a quick coffee break.

Vacuum flask for everyday use, hiking and cold days

A good vacuum flask makes a big difference when the temperature changes or when the break comes far from the nearest kitchen. On a hike, it can provide a hot drink at the rest stop, during a winter trip it can add quick warmth, and in everyday life it makes it easy to bring coffee or tea without disposable cups.

Primus vacuum flasks are developed to work in many such situations. They combine durable materials with practical details that make them easy to use often, whether the bottle is in your backpack, standing on your desk or coming along in the car.

Frequently asked questions about Primus vacuum flasks

How long does a Primus vacuum flask keep drinks hot?

How long a vacuum flask keeps drinks hot depends on the model, volume, fill level, outside temperature and the temperature of the drink when the bottle is filled. A larger flask that is properly filled generally keeps heat longer than a smaller bottle with little content.

Can I wash my vacuum flask in the dishwasher?

Most vacuum flasks are best washed by hand, as this helps preserve the insulation performance, lid and surface treatment for longer. Warm water, dish soap and a bottle brush are usually enough for daily cleaning.

What size vacuum flask should I choose?

A smaller flask works well for shorter trips, commuting or a single cup of coffee. A larger flask is better when you want drinks for a full day, to share with several people or to stay out for a long time in cold weather.