Before buying and choosing a sleeping bag, we must take into account the following and ask the following questions.
What is the destination where I will go, what kind of climate is it? , Wet or dry?
1 – Choose a sleeping bag with synthetic fiber packaging if you travel to destinations with a very humid climate (Iceland, Scotland or the wet Patagonian mountains … etc.).
Advantages : Very good handling of moisture absorption on the inside and outside insulate even when wet. Drying and easy cleaning.
Disadvantages: Higher volume to fold and greater weight. Poor compressibility.Loss of blowing time.
2 – Choose a sleeping bag with a goose / duck coat for dry places or continental climate (mountains of the Alps, Pyrenees, Himalayas, Caucasus, etc.).
Advantages : Highly compressible / light energy / high insulation.Long life.
Disadvantages: Interview more delicate, not like the humidity with which it quickly loses its insulating properties.
Evolution: In recent years, manufacturers have tried to inquire more about these two types of sleeping bags looking to reduce their weight and make them lighter synthetic fiber bags and waterproof the bags of feathers without reducing their quality.
Mammut has also worked on a pen sleeping bag with integrated waterproof bag, Sea tú Summit has found solutions mixing synthetic fibers on the synthetic surface and feathers on the inside. Mountain Hardwear worked on waterproofing by water treatment, even before the downfill. Finally, many manufacturers now use the wind resistant outer fabric and prevent the pen from entering into moisture
When do You come? Only in summer or in winter?
The choice of temperature is indeed decisive in choosing your correct sleeping bag.
Since 2005, tries to establish a fundamental standard to compare the temperatures of the bags, is the so-called Standard 13537
These measurements are performed in the laboratory on a thermal manikin.
Example: Mannequin “MARTIN” at the French Institute for Textiles and Apparel (IFTH) located Ecully / 69 or Mannequin “CHARLIE” the Hohenstein Institute in Bönnigheim Germany.
These measures are used to compare the results of one model over another, but do not take into account the factors of real conditions, such as weather (wind, humidity …) or the physiological state of the person (fatigue, health …).
Some bags with specifics (Mountain Equipen EXL for example) can provide better standardized temperatures (2 ° C), but are not verifiable by the standard 13537, since it is not specifically testable!Obvious advantages of elastic fabrics by having less air to heat etc….
The norm 13537 immediately establishes three temperatures:
1 – The temperature Comfort
Lower limit of comfort that the user of the sleeping bag in a relaxed posture, for example, lying face up, is the world in thermal equilibrium and has neither cold nor hot.
(Determined by a standard woman under normal conditions of use).
2 – Temperature limit
Limit of the temperature at which the user of the sleeping bag is generally curved in thermal equilibrium and has neither cold nor hot.
(Determined by an average human under normal conditions).
3 – Extreme temperatures
Extreme temperatures below what causes damage to health by hypothermia.
(Determined by a normal woman under normal conditions).
How important is the weight and volume of your sleeping bag?
If you are traveling in a 4 × 4 or if you use other means like (llamas, mules, porters or Yaks), choose your comfort above all else, the length of your sleeping bag and your well-being.
A good night recovery is indeed very important during your circuits and excursions.
On the other hand if you have to travel lightly, independently with a small bag, in this case you should be very careful with the volume and weight of the bag and that easily bend in your sachet of compression.Your choice will definitely be a feather bag (if you are not allergic, of course).In this case, it is necessary to compare the rates of insulation bags called “Power Fil” and proportions “down / pen” to find the bag more insulated, more compressible and lightweight possible.
Power fill allows you to compare the insulating power of feathers that are used in the lining of sleeping bags. Assuming the best insulator is air, it is sufficient to calculate the inflammation, such as a pen. The operation consists of taking a single featherweight (456 g / 1 oz) and see what volume it occupies in cubic inches (CUIN) = cubic inches. The higher the volume, the greater the insulation power of the boom will be. The values are currently between 500 and 850 CIUN
The Proportion Down / Feathers :
There are significant differences in the quality of insulation and compressibility according to the proportion of down and feathers used in the lining of the sleeping bags. This value or index is expressed in%.
Thus we find sleeping bags with a coating of 85% / 15%, 90% / 10%, 95% / 5% and even 96% / 4%, which is the highest rate seen to date.Goose feathers are also more insulation than crouching.We can even assume that a high goose feather in Portugal is less insulated than a high goose in Hungary and Poland
Is your bag can be combined?
It is nice to be able to combine your sleeping bags in a mild climate, comparing against a very cold climate will bring you cold drafts and the night without sleeping
In fact almost a double bag for 3 people and therefore requires the heating of a larger volume of air.Really daunting for negative temperatures.
How to keep your sleeping bag?
Synthetic sleeping bags can easily go through the washing machine, however the feather sleeping bags require more attention and a more delicate cleaning (using a specific detergent from DOWN WASH Nikwax) and a quick drying to prevent mold.
The ideal to better preserve your sleeping bag is to minimize the number of washing.