Thermos Mountain FFX is the world's leading outdoor thermos. You won't find a thermos with better parameters today.
The thermos is designed to meet all the requirements of a bottle for the mountain environment: easy opening and closing, impact resistance, high insulation performance, light weight and compactness (only 235x70 mm!).
Extremely lightweight stainless steel vacuum insulated thermos with double cap, 500 ml for extreme environments - matt black.
Weight of thermos | ![]() |
![]() | High insulating performance |
Perforated Thermos Cup | ![]() |
![]() | Slip ring |
Double Thermos Closure | ![]() |
![]() | Thermoset Bottom Protection |
Features:
- Extremely lightweight thermos ideal for mountains and outdoor activities.
- Thermos double wall vacuum insulation - maximum thermal insulation.
- Thermal bottle body made of durable stainless steel.
- Increased mechanical resistance thanks to flexible protective ring and bottom cap.
- Very light and compact design.
- The non-slip ring, shaped cup and cap ensure easy opening even in extreme conditions - with gloves.
- Double cap for easy opening and a calm flow of the drink.
- Narrow neck diameter 3,6 cm - high heat resistance.
- Watertight cap.
- Removable cap for easy cleaning.
- Complete range of spare parts.
- BPA free.
Specifications:
Capacity: 500 ml
Height: 235 mm
Diameter: 70 mm
Neck diameter: 36 mm
Weight: 280 g (260 g without anti-slip ring and protective bottom cap)
Keeps hot: 24 hours
Keeps cold: 24 hours
Before the Thermos brand became famous, it was just an idea. Ambition. A scientific feat that turned into a breakthrough innovation in the home. In 1904, Thermos was the first company to develop consumer products using vacuum insulation. The origin of the company's name can be found in the Greek language, where one of the meanings of the word "therme" is "hot". The company name THERMOS became the basis for the common name of the insulating bottles - thermoses.
With our durable double wall stainless steel vacuum insulation technology, you're sure to find a product that fits your lifestyle while providing superior performance with exceptional durability.









