Types of Sleeping Bags

The sleeping bag plays a very important role in any trip, can be classified according to the filling, depending on the shape and the thermal range.

Next to the backpack and boots are the 3 most important personal objects of a camping trip.

If we make many outings throughout the year, it is advisable to have a sack of spring-summer and another of autumn-winter.

We will try not to have zippers (it is there where all the bags usually break, and it is uncomfortable to feel its freshness when sleeping in winter). If the sack is good, we have bivouac case and the night allows, we can stay overnight, without installing awnings or tent.

Types of bags:

There are many types, varying according to the model, but let’s talk about the most general that we will find in the market:

Rectangular bag: With zipper that opens totally and disengage by the bottom, remaining like a quilt. Its advantages are the breadth and power to join another bag. Usually used in summer.

Mummy sack: They have a sarcophagus shape (wider at the shoulders) once closed. They have a large and lateral zipper (it is fashionable to attach two sacks) and can be put in the head.

Saco-sheet: sack fabric sheet used as hygiene to not contact the bag (if not yours) or blankets and mattresses shelters (not usually washed much). It is easily washed in the washing machine.

Double bag: Used in high mountain, being 2 sacks of pen sewn one on top of the other and with opposite seams (isolates even more).

Bivouac Cover: Used for sleeping in the satin and functions as the third layer waterproof of the mountain clothing. It serves to cut off the wind and protect it from rain. It does not perspire, so you sweat more in the sack. They are shaped like a sack.

Classification according to the filling consists of two groups: 


Synthetic bags are cheaper, do not require a treaty as careful and at some point easier to get than a pen.
The pen has a greater thermal amplitude (they are more sheltered, it varies with the grammage of the filling), they are smaller in the transport of them and they are more thought for the use in the mountain and / or very cold places.

The classification according to the form also consists of two groups:



As the word says, the rectangular bags have a rectangular shape, some have hoods and some not, these offer us much less shelter than a sarcophagus type.It is very rare to find a rectangular pen bag in its majority, being designed for a high performance, have the form of a sarcophagus.

Those that are sarcophagus type are broader in the shoulders, are thinned to the feet and all have hoods that serve to cover our heads to not suffer cold.25% of body heat escapes through the head.

The classification according to the thermal range is very wide, since on NAMPABUYER you can find sleeping bags from 20ºC to -25ºC in synthetic and in pen there are up to -40ºC.

As you will have noticed all the bags are accompanied by at least a number, for example, Waterdog Highland 450 -10.

The 450 indicates the fill amount (grams), and the -10 indicates the temperature for which it was intended. The temperature and the filling go hand in hand, because at higher filling the minimum temperature can drop because it is more isolated.

High-performance sleeping bag specifications usually include 3 numbers, eg, Northland Nevadu 350 (that’s the model) 18 ° C, -1 ° C, -16 ° C (thermal range). 18ºC is the maximum temperature to use the sleeping bag without dying of heat, -1ºC is the lowest temperature of comfort, bone that between 18ºC and -1ºC we would be comfortable in the bag, we would not have cold or heat. -16ºC is the extreme temperature, this means that at a higher temperature than this, the cold would not produce hypothermia, but if it does less than -16ºC is in danger of  hypothermia .

Now you know how to classify sleeping bags, but the most important thing when buying is to decide what brand, what kind of bag and what thermal range.

It all depends on the trips you intend to do, and at what time, but it is also not a matter of having a sleeping bag for each occasion, ideally one that suits your needs during the life of the bag.

Also bear in mind that sacks that are suitable for lower temperatures are more expensive and depending on the filling more bulky when it comes to carrying. A sleeping bag of -10 ° C may seem somewhat exaggerated, but it covers the minimum expectations that a trip through areas of low temperatures can cover.At some point you can say that it is preferable to have a little heat than to have cold, if you are hot you sleep with the bag a little open and without putting on the hood and ready, if you are cold nothing saves you.

You have to regulate the temperature that you get inside the bag, taking into account the clothes we wear, not to perspire too much and when we have to leave the bag we can shelter ourselves with something.

Ways to store the sleeping bag:

One way is to fold and fold the sac to create a roll that fits in the case (comfortable but with the inconvenience that we usually fold it by the same place, separating the fiber by the folds). This way of folding the sack will never be done with the pen bags.

Another way is to go directly from the beginning of the bottom of the sheath (apparently less orthodox).

Of the 2 forms we will begin by the feet so that the air leaves better by the opening of the head.

It is ideal to have a squeeze bag to occupy the minimum space.

Practical Tips on Sleeping Bags:

Along with the quality of the bag, other factors are important, such as: Unpack the bags opportunely and shake them.

If possible, we will enter the bag being warm and dry.

If you do a little exercise before getting into the sack you will warm up before.

If you like to use the pillow, fill the bag with clothing.

To dry clothes wet by rain we will put it under the insulation.

If breasts cool your feet we recommend a pair of dry and clean wool or merino socks.

We will air the sleeping bag after using it to lose the moisture we have transmitted.

Wet shoes are dried by lying tight newspaper and placed in a stream of air (inside the double bag) with the sole up and on a small stake nailed to the floor.

When you get home take the sack of the compressible cover and hang it on a hanger (to get less deterioration)


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