The ratings of sleeping bag temperature is only a starting point no final guarantee. Real-world comfort commonly matches to the laboratory-tested values because actual world has too many variables that tests can not imitate. Does not exist unique method for estimate the heat of sleeping bags and that pushes the figures even less reliable.
Before brands benchmarked their bags self in own laboratories by means of various modes. Hence you could not compare whether 30-degree bag of one company genuinely matches to that of another.
Sleeping Bag Temperature Ratings Are Only a Guide
As far as warm either cool you feels yourself in bag depend of many factors. Personal metabolism physical constitution age fitness hidrataĵo food lacio and even mental state all matter. Add natural circumstances as humidity wind ground temperature and shelter type that plikomplikas everything.
Even last meal or drink with alcohol can alter the physical key heat during rest. Because each folk malsimilas in form magnitude and age it is possible not ensure that bag will keep you warm until precise temperature.
Also the form of sleeping bag affect its warmotenecon. Mumiformaj models izolacias more well and reduce varmoperdon. Rectangular gives more space but requires more physical heat for stay comfortable.
Well seating hood help to keep the warm air inwardly during troda space can feel malvarmiga unless the bag answers for lower grades. For reach the full rating you must use the hood although some finds it klaŭstrofoba.
best bags follow the EN 13537-system. It gives clear ratings: upper limit comfortable bottom limit and ekstremo. The comfortable value shows widely the lowest temperature where you should not suffer too much cold.
Bottom limit points at that grade normal man sleeps in kunkurlitiĝo without wake up. The gross rating is only for survival at normal woman. Temperature where she lasts six hours without risk of hipotermia death.
Between bottom limit and ekstremo one expects strong cold.
If bag shows only one number more well escape it. For camping answers to choose bag according to the lowest overnight temperatures that you expects together with your own dormokutimoj. If you are typically cold sleeper add 5°C of sekureca margin.
That gives at least 10 grades of buffer under the projected low. Silka mumia linerilo can add additional 5-10°F heat. More well have too warm bag than too cold, too much heat settles by means of open zip for air or sleep up of it.
Sleeping pads matter likewise. During bags have temperaturajn ratings tampons indikiĝas by means of R-values. In higher R-ĉifero des more it separates you of cold soil.
Ideally use separate tampon for the projected temperatures with R-value at least R5 or best R7+.
