What is the temperature rating?
The temperature tating is a measurement that indicates the room temperature is suitable for a sleeping bag. His performance is not immediate and the law that the rule imposes precise charges but has some gaps that you should know about transporthint.com.
EN 13537 1 January 2005 on the standard temperature rating.
Sleeping bag labeling regarding the temperature rating is regulated by the European standard EN 13537 1 Jan 2005. Summarizing it, this indicates the temperature standards, values to be indicated to clarify at what temperatures it is good to sleep in the sleeping bag. This applies to bags that cover a temperature range from 5° to -25° are excluded instead the military sleeping bags, those for children and those who do not fall in that range of temperatures. Children’s sleeping bags are excluded because their metabolism and temperature sense – is too different and special compared to that of adults, and difficult to standardize.
Using this parameter is not required for companies, so if you find indicated the temperature rating, also check that it is suitable to EN 13537 1 Jan 2005. Companies can ignore the norm, but if they indicate a temperature rating using standard evaluation or different scales, it becomes misleading and are forced to withdraw the product from the market.
How do you estimate the Temperature Rating?
Using a thermal manikin thin cotton dress, a sort of pajamas. The subjects considered are two:
- Male Standard: 25-year-old man, tall, 1.73m for weight 73kg;
- Female Standard: 25-year-old woman, high 1.6m to 60kg in weight.
The dummy “sleeps” in the sleeping bag, placed in turn on a mattress camping.
Temperature rating levels.
- Max/Max: ambient air temperature at which a standard man sleep well, without waking up and without sweating too.
- Comfort: outdoor temperature at which a standard woman sleeping in a relaxed position.
- Min/limit: ambient air temperature at which a standard man can sleep for eight hours in squatting position.
- Extreme/Extreme: outside temperature at which a standard woman resists inside the sleeping bag for six hours without going into hypothermia.
The first observation to be made is that the extreme level not even to consider when considering a purchase, because it says that a woman’s average, healthy and not fatigued or stressed, would not die by staying inside that bag for six hours at that temperature. Maybe. Don’t give weight to that level in purchase, because even if someone finds himself in an emergency at that temperature, factors such as hunger and fatigue deplete even that limit.
Did I mention the temperature rating on the page dedicated to sleeping bags, but I reiterate some concepts.
Consider that tent you, where are you and if you’re a “sleeper” cold” or “hot sleeper”– those people who normally night long tend to have cold or not. From chilly “sleeper”, if it says “ok up to -10 degrees”, ignores the written and say you’re OK up to -3 or -4 degrees. By sleeper “hot”, instead, the problem arises in the opposite side of the temperature rating: if it says “ok up to 2° +5°” you’re probably from sweating. In any case, as “stretch” a little temperature rating between high and low temperatures is a way to sell more, I prefer to remove a priori one or two degrees from extremes, and only then consider what kind of sleeper are.
You should go straight to the “comfort” temperature because, as you saw, below we start to not be comfortable.
What influences the perception of the temperature in my sleeping bag (because the temperature rating says it all – see Mcat-test-centers).
Each person perceives the temperature in its own way, the temperature rating is not enough, a bit of common sense is needed to assess whether to take a sleeping bag just barely hotter or colder. Some elements that determine our perception are:
- our lifestyle and our habits: If you have a very relaxed lifestyle and live attached to the radiator, in a house always warm, you’ll have a very low tolerance to cold, otherwise if you are used to staying in the cold;
- physical preparation: a climber in full form is supposed to feel less cool than who spends his days sitting;
- sex: women tend to feel colder than men, even five degrees less;
- weight: a skinny person tends to feel colder than an overweight;
- the feeding of the day and hydration: If you only ate lettuce and tomatoes, I doubt you’ll get hot;
- physical and mental stress: a person tired physically and/or mentally tend to feel colder at night.