Since breaking my bag, which has put me in a bad mood, because I have not been the cause, I have to think about buying a new one, going around the Internet looking models and features, I thought about making a small Blog Special on "Sleeping Bags".
The first thing is to know our complexion, but not many sizes of sleeping bags, if it is advisable not to make mistakes.
The reason is this: the bag, does not generate heat, the heat keeps the body (our body) generates, If our body is small, a large bag will cost more to heat the air. If a person introduces measures 1.50cm and 1.90cm in a bag probably notice that the bag does not perform as expected, and even get cold, if instead a person enters a 1.90cm bag 1.80cm (to exaggerate ) the first is that it is not, but not having spaces where hot air accumulates, this appears lost and feeling cold. So the first thing is to have a bag as our body.
The second thing is to be clear that there is a bag for all but one situation for each bag, we must take into account, where we will use the bag and under what conditions, is not the same to bivouac on the beach, where salt , humidity, sand, in the Pyrenees, is more cold, rain, snow ...
That type of bags I can choose:
Fiber Bag
Beach areas "warm" or rainy in these areas suggest that synthetic bags need little care and maintenance should be wet, dry quickly.
Upon his recommendation for warm areas temperature is greater than the feather, and therefore tend to weigh less. A synthetic bag recommended only supports my * extreme temperature of -30 degrees, remember that these indications are not 100% scientific because they depend on weather conditions and the person wearing the bag.
* Extreme is the lowest temperature at which a standard woman complexion and a slightly built man, runs the risk of hypothermia.
"As a practical guide and from experience I will tell you that bags currents fiber 1kg go well at +10 ° C, the 2kg to about 0 ° C, and the standard pen also 2 kg total weight of -3 ° C to -10 ° C, for course without tent or thick clothing. " extracted from Elevation
Pen bag
Cold Zones, High Mountain and Snow: no need to climb to 3000m to be "cooler" (get temperatures of -15 degrees) in these areas and in these conditions suggest sacks of feathers, the isolation level of this type sac is outstanding and still no synthetic bag has been able to get it. They tend to be heavier than synthetics, as they usually are prepared for extreme temperatures, its drawback is that wet are useless, take days to dry out and lose their properties. The other drawback is washing as saw in the other post .
Having chosen a place we know more or less where we're moving temperatures, and anticipate the worst, I still remember being in the Pyrenees, in mid-September, with a day of 20 degrees, at night and entered the cold front low temperature at -7 degrees, I nearly frozen to stay there, these things must be taken into account as a good bag can save your life, and a bad bag at the wrong time can mean ...
To explain what the temperature I leave an extract from the Journal Slope to a user's response:
"The most serious manufacturers ranges provide comfort-and most useful-ends and taking into account a project that will unify European homologation criteria and partly solve the chaos of the different test results. This pr EN 13537 will get with fiablidad more extreme temperatures and comfort valid for what a woman is considered statistically Standard: 25 years, 60 kg, 1.60 m and with a body surface area of 1.62 square meters.
The extreme temperature is a fact too theoretical and reveals from tremors and when there are serious risks of severe hypothermia (and thus death). To know what we mean, in a bag marked at -20 ° C as we only outlier-temperature warm comfort-a +1 / +2 ° C. And that if the relative humidity is about 50%. " Drop
Regarding the form of the bag no doubt have to be mummy bags with square / rectangular well for Hostels, cottages, or visits to the homes of friends in festivals, but in no case for trekking, hiking, backcountry or mountaineering.
I hope these brief indications serve you to choose a good sleeping bag and foremost to thank the people who flood the Internet with their experiences and wisdom.
