a hot water bottle.....nah being serious...you get into a down bag cold...you stay cold...you get in warm and you stay warm....try wearing thermals to bed....
I have a 750g macpac bag and sleep really warm with a cheap warehouse bag liner...for really cold winter nights I used to have a winter weight single bed sheet sown into a sack and used it as a liner...bulky and heavy but very warm,there are polarfleece options now..a liner boosts bags rating by heaps as it keeps the warm in close to you....it sounds like you are cold to begin with.......a hottie is or course far too heavy to carry BUT a drink bottle of warm water poked into sleeping bag just before you get in and taken out soon afterwards might help get the air inside bag warm,zipped up it will stay warm..take bottle out so you dont roll over and wet the bed!!!!
a sleeping bag cover like the old japara ones the defence force had (mine must be 50 years old) also boost warmth by huge amount...I didnt realise how much by untill got sick of my mate freezing in his cheap lightweight bag on week long trip so gave him mine to use....I felt the cold a little more afterwards...again it must be the trapping of warmth and the cover stops moving cold air from robbing it from you.
Talking about water supply in wild, in my hiking days I drink clear water from rocky creek without purifying it and so far no problem. So, is safe to drink water directly from Alps rivers, streams in mountains directly? Since, water is heavy to carry and I drink 1.5L a day at least.
So be it
270 is a harmonic divisor number[1]
270 is the fourth number that is divisible by its average integer divisor[2]
270 is a practical number, by the second definition
The sum of the coprime counts for the first 29 integers is 270
270 is a sparsely totient number, the largest integer with 72 as its totient
Given 6 elements, there are 270 square permutations[3]
10! has 270 divisors
270 is the smallest positive integer that has divisors ending by digits 1, 2, …, 9.
Hi, are you veterinarian? Or, sorry should `t ask if you got any conditions. Do you carry a tent or any sort that will black you from wind since wild chill is big matter. My suggestions are try eat lamb or goat meats often before you go. -11 sleeping bag depends on quality, maybe buy another one because you said your bag weights 1.9kg but only 300gm, my warmest is -28c, 450gm almost same weight like yours.
Our body is like an engine, should keep it running and running it will need fuel, I burn body fats even when I was asleep, some people will need jogging. So, keep feeding yourself with protein, carry some beer jerky.
Beef jerky, why all the jerky are sweetie in here? Not salty with bit of greasy...
So be it
I have been using Sawyer filtration system since last 1 year and been fine after drinking water from a canal and mountain streams so I guess it working.
https://www.amazon.com/Sawyer-Produc...65&sr=8-2&th=1
Another option is
https://www.amazon.com/LifeStraw-Per...s%2C265&sr=8-9
Added advantage being you can straight drink from a stream. Pretty lightweight systems both of these.
I drink from back country streams all the time, never really considered using a filter as generally over here its fine to drink. I would never drink from anything that runs near fields or paddocks though.
The water filtration thing is an interesting topic in itself, do people use them here? I've always just drunk straight out of the stream, I dint know anyone that does otherwise. The only time I've even bothered to boil water was when the only water I could find was still water.
I tend to chuck in a water purification tab in to the water I collect. I'm 99% sure the water will be fine, but the tabs weigh next to nothing, and saves me having to boil the stuff before drinking it. I normally have a 3 litre bladder in the pack when I start my hunts, so I'm not in any hurry to find drinking water. Any water I collect on the way gets put into a new container and one tab per litre is added. All good to drink after 30 mins.
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