Not much. They only keep in radiated heat, which is very high if you've just run a marathon but is much less useful if you're trying to keep warm whilst you sleep.
Better than a kick in the teeth but nothing like as good as an army issue arctic sleeping bag (about £30 on ebay).
Would certainly help if you're lying on stone or concrete to stop any heat getting absorbed awayBit of a random thought but seeing a few people out with sleeping bags and was curious ifthose silver emergency space blankets would be any help?
No it wouldn't. It's not thick enough to provide any insulation. You'd do better with a sheet of cardboard.Would certainly help if you're lying on stone or concrete to stop any heat getting absorbed away
Yep issue bags are super warm and tough.
Add a bivvy bag and you've got about the best protection you can get
that's what silverfish just said wasn't it?Not night after night though.
A bivvy bag and a half decent sleeping bag would be way better.
Silverfish was referring to the army issue sleeping bag and bivvy bag. The bivvy bag is Gortex and keeps you dry, the bag is a 4/5 season and keeps you warm. You do need a roll mat to stop you losing heat to the ground (Which as salem says is pretty significant) but with all three you can stay warm and dry in some very nasty conditions.Not night after night though.
A bivvy bag and a half decent sleeping bag would be way better.
No it wouldn't. It's not thick enough to provide any insulation. You'd do better with a sheet of cardboard.
Bit of a random thought but seeing a few people out with sleeping bags and was curious if those silver emergency space blankets would be any help?
Yeah, you're probably right after doing a bit more reading on the topic.If that's all you were stuck with, a couple of sheets of cardboard underneath the space blankets would make a huge difference. I did a field test early this year, where I used the kit that lives at the bottom of my rucksack. Basically it's orange plastic survival bag and a space blanket thing in a bag shape. Certainly enough to make a huge difference and preserve life, but not a nice sleeping experaince. Having some kind of ground insulation makes a huge difference.
Silverfish was referring to the army issue sleeping bag and bivvy bag. The bivvy bag is Gortex and keeps you dry, the bag is a 4/5 season and keeps you warm. You do need a roll mat to stop you losing heat to the ground (Which as salem says is pretty significant) but with all three you can stay warm and dry in some very nasty conditions.
On the other hand that assumes you've got somewhere to stash your sleeping kit that no one will find, that it's dry and clean and that you can find a patch where it's safe to sleep.
It would reflect back heat that would be absorbed by the cold ground, surely? I was imagining it being used in conjunction with cardboard tbh, surely it would help?No it wouldn't. It's not thick enough to provide any insulation. You'd do better with a sheet of cardboard.
With cardboard or a roll mat it would make a difference but it's to help with a different form of heat transfer.It would reflect back heat that would be absorbed by the cold ground, surely? I was imagining it being used in conjunction with cardboard tbh, surely it would help?
When I was doing offshore sea survival training, they have these noddy suit things that are basically a space blanket onesie -to be used to treat hypothermia. I put one on and was boiling within seconds, although I wasn't hypothermic obvs
The space blankets are generally awesome in any cold situation, although ideally in conjunction with other stuff, as GS said.
That's a nice idea. You oculd maybe ask them if there is anything in particular that they need but socks and gloves are always welcome. Maybe a hat too.Well basically I was thinking of doing a few boxes of stuff for some of the local homeless guys I see about. Like a tenner each on some nice stuff from the 99p store. A few treats and that. Don't want it to be all functional but saw these in the poundshop.
Any other suggestions for cheap and cheerful stuff.
Btw I know that I'd probably be better off donating to shelter or something but I want to do something a bit more personal.
Yeah that's what I mean - not a solution, but a useful addition to whatever you've already got. As bob said, they don't insulate as such, but they certainly won't make you any colder, any extra heat retained is a good thing!But also have massive limits, which I think they're not a great solution for rough sleepers. I'm sure if you had nothing and someone handed one to you, it would be better then nothing. This thread has just prompted me to have a sleeping bag clear out and donate some to a local shelter.
Well basically I was thinking of doing a few boxes of stuff for some of the local homeless guys I see about. Like a tenner each on some nice stuff from the 99p store. A few treats and that. Don't want it to be all functional but saw these in the poundshop.
Any other suggestions for cheap and cheerful stuff.
Btw I know that I'd probably be better off donating to shelter or something but I want to do something a bit more personal.
Darn it.. can't find my longjohn trousers .... I could have used them next week !!!What about some M&S LongJohns? when the snow comes they really make a difference.
eta: no perhaps scrap that, you would need to know what size the person was.
I wasn't sure if toothpaste etc would be patronising or something they have access to. Was also thinking a little whiskey or something, good or bad idea?? And a fiver.
That's really thoughtful of you - socks are usually very much appreciated.Well basically I was thinking of doing a few boxes of stuff for some of the local homeless guys I see about. Like a tenner each on some nice stuff from the 99p store. A few treats and that. Don't want it to be all functional but saw these in the poundshop.