SLEEPING BAG

   The blanket represents a sleeping bag of the rectangular form with a lightning on perimeter is intended for the simple campaigns, not having restrictions on volume of transferable things.

Advantages
•    The blanket is more practical, than a cocoon. Having unbuttoned a lightning they can be covered as a simple blanket or on the contrary to lay on all tent.
•    In a blanket it is possible to sleep somehow, though in a pose of "germ".
•    Having spread out on grass on it can sunbath at once some person.

•    Two blankets are sewed by lightings. And then it is possible to sleep three together and even four together. Therefore to sew sleeping bags this hobby of senior pupils and students.
•    The sleeping bag - blanket is easier for drying up, it is especial if it made from a dark material.

Lacks
•    Big volume of a sleeping bag.
•    It is not applicable under cold conditions of a campaign (below a minus 5). Though if there is a hood that it is quite possible to use.
•    As a rule at identical temperature modes has the greater weight (due to volume)

Down.   Modern sleeping bags differ the big variety of inner material which choice defines the basic heat-shielding properties of a product. Now the warmest inner is the down (link). However, at rather high price, the down absorbs moisture very well and for a long time dries. As damp a sleeping bag to keep it is impossible (it starts to decay), it is not suitable for long expeditions to places with a damp and hot climate. Hence, the basic applicability of down sleeping bags is high-mountainous ascents and the Arctic expeditions.

   The synthetic winterizes at present is the cheapest inners, but also to expect from it much does not cost (up to +5 for 2-layered sleeping bags, up to-10 for 3-layered). Usually such sleeping bags absorb a moisture less and quickly dry, but for 3-4 serious campaigns become compressed both almost become twice more thin and, hence, more coldly.
Recently the increasing popularity is got with sleeping bags with synthetic hollowed inners they represent thin hollow "macaroni", very long so such sleeping bags are smaller become compressed. These materials on density of fibres, quantity of apertures inside each fibre, etc. differ. These materials do not dampen almost and if soak through heat even wet. Thus, sleeping bags with similar inners are rather easy in a care: they can be erased in the washing machine, they easily dry. On temperature parameters they are warmer than synthpone ones, and there is a set of variants of a choice: from easy models (+10 / + 3) up to comparable with down (-12/-30). The range of application of such sleeping bags is very wide: winter campaigns, any pedestrian and mountain departures it is especial when the big differences of temperatures and humidity are expected. In more detail about synthetic inners read in "MATERIALS"

   The majority of synthetic sleeping bags have a "tile" design. The layers of a heater in part imposed against each other, remind a tile
However, if inside such sleeping bag to start to move, it breaks stacking layers of a heater, "cold places" and warm air are formed departs. Also such bags quickly become compressed also lose volume.

The layered structure is more comprehensible "Sleeping bags" from different directions shroud sleeping as though in set of the big continuous warm blankets. This uniformity provides reliable heat faster than false volume of "tile" sleeping bags. Such design solves also problems of durability which always arise with cheaper tile design. The layered design is more expensive in manufacturing, but such sleeping bags are more effective and are durable.

   As an external material in manufacture of sleeping bags various updating nylon (nylon) more often are used. Exception is down sleeping bags, for them have been created special fabrics which optimum «holds" down, such as Pertex, Ultrex and others. These fabrics are wind protecting, waterproof and extremely air-penetrable. These fabrics have very important two properties. Additional protection against water interferes with penetration of humidity inside and prevents dumping a heater. On an external fabric down and, less often, than synthetic sleeping bags the special membrane which protects it from penetration of moisture inside is sometimes rendered and thus allows a fabric "to breathe", that is to remove moisture from a body outside. Such type of a fabric refers to Dry-Loft. Some manufacturers for an internal surface of a sleeping bag use a clap.

Packing
   Packing of a sleeping bag plays the big role in the pedestrian campaigns when the feeling of comfort depends on volume of a backpack, and, the mood means also. Becoming already habitual form of stacking of a sleeping bag as a roll is not optimum.
Modern well compressed sleeping bags are packed in special compression bags having on each side slings, compressing a bag into length. Moreover, stacking does not demand preliminary rolling sleeping bag in a roll. In such compression bags it is possible to pack not only sleeping bags, but also clothes, considerably saving a place in a backpack.

Temperature mode of use - one of key parameters, together with weight and volume always indicates on a label to a sleeping bag.
t ° Max - shows temperature at which even at the unbuttoned sleeping bag it is possible to have a rest superb and perfectly to sleep.
t ° Comfort - in these conditions in a sleeping bag it will be warm and comfortable. You can well have a rest and sleep.
t ° Extrem - at such temperature depending on your sensitivity a cold and conditions of an environment it is necessary to use additional clothes.

Having woken up in the morning does not pack a sleeping bag at once - give it to be aired, and in the evening beforehand spread out and before dream shake it up. In the washing machine the mode of careful washing without wringing out and drying is supposed at the lowest temperature. Keep a sleeping bag in a dry place and in the straightened condition.