How to keep warm outdoors
The best way to maintain a steady body temperature is to use several layers of clothing.
This means having different types of underwear at your disposal, allowing you to change your clothing depending on your activity or the temperature outside. It is the air inside and between each garment that keeps you warm. This solution also gives the best mobility.
- As a rule, when engaged in high activity and when it’s not so cold, you should just use Aclima CoolNet as your underwear.
- At lower temperatures you will need a garment in wool as your next layer.
- On the coldest days numerous clothing layers are needed. Second layer is supposed to capture moisture from your underwear and at the same time insulate.
- A thick wool sweater, wool fleece or a similar garment is suitable. Aclima HotWool jacket is a superb garment for extra cold days.
- Finally, your outer layer should be wind/waterproof and ventilating.
Perception of Comfort Temperature
The perception of comfort is different from person to person. It will also vary from day to day based on your physical fitness, mental condition, what you have eaten and when, how you have organized your bivouac, humidity and even the altitude you are at. It is also a fact that the lower the outside temperature the more clothes you wear in your sleeping bag. At Nanok we base our Comfort Temperature rating on a male, 18-24 years, with an expectation to sleep 6-8 hours without waking up because of being cold All our bags are tested according to EN 13537 and ISO TR 11079. The temperature settings are based on lab. tests, field tests and our years of Norwegian outdoor experience.
How to interpret “Nanok Functional Temperature”:
- In the temperature range of +15 °C to -5 °C it is expected that you will wear short underwear and a T-shirt in your sleeping bag.
- In the temperature range from -5 °C to -20 °C you are expected to wear a thin “1st layer” that is normally a set of thin, long woollen underwear
- When it is colder than -20 °C you will normally use a thin 1st layer and in addition a 2nd layer on your upper body.
- Women should add 4-5 °C to the comfort temperature in outside temperatures down to -15 °C.
- Women should add 8-10 °C to the comfort temperature in outside temperatures below -20 °C.
- Those older than 30-35 years you should add 5 °C to the comfort temperature.
- If you are going to altitudes above 3.300m (11000 feet) you should add 5-10 °C to the comfort temperature.
If you want more information regarding testing and temperatures please check out Nanok's web sitewww.nanok.no.