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Thermos Mountain FFX with a volume of 500 ml is an ultralight, durable, and compact thermos that will keep your drink warm for a long time. With its top-notch specs, it ranks among the best on the market. It's made from stainless steel with detachable silicone parts.
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Thermos Mountain FFX is at the top of its game when it comes to outdoor thermoses. Thanks to its vacuum insulation and durable stainless-steel construction, it’s extremely lightweight, has compact dimensions, and excellent insulating properties. Your drink (tea, coffee, etc.) will stay warm or cold for a long time, even in extreme conditions. With its double closure and smart design, it’s easy to open and close, resistant to impacts, and perfect especially for winter mountain environments. We offer this thermos in three color variations.
We have the thermos available in 3 different sizes (based on internal volume): 500 ml, 750 ml a 900 ml.

Low weight – comparable to the weight of more expensive titanium thermoses. Without the removable non-slip ring and bottom protection, it's even lighter.
High insulation performance – vacuum insulation that keeps your drinks hot or cold for up to 24 hours, even in extreme conditions. The manufacturer claims that after 6 hours, the drink's temperature is still above 77°C (with the starting drink temperature at 95°C and an ambient temperature of 20°C).
Non-slip cup – made from two different hardness materials to prevent slipping. The wide bottom provides increased stability of the cup while ensuring an easy grip.
Anti-slip ring – for easy opening even with gloves on. It also serves as protection in case of a fall. You can optionally remove it from the thermos to save a few grams.
Double closure of the thermos – the thermos has a narrow neck (diameter 36 mm) with a double closure for better insulation and easier opening and closing. The inner part of the closure is equipped with a double thread with a larger pitch, which means you can loosen the closure by just half a turn and pour (with standard closures, you have to turn the closure a full turn).
Bottom protection of the thermos – the bottom of the thermos is fitted with a silicone protection that shields it from scratches and reduces impacts when dropped. You can optionally remove this part from the thermos to save a few grams.
Easy maintenance – you can easily remove and wash all parts of the lid, as well as the body and the cup of the thermos.

If you are unsure about which size or color to choose, or if you have any other questions, feel free to contact us via email or directly in the online chat. We are here for you.