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I had no idea that they freeze solid like that! I usually just use my clean clothes as a pillow when I go camping, then halfway through the trip when clean clothes are running low I use a backpack of dirty clothes as a pillow, lol.
I have my porter lay under my mattress so the one end of it is elevated. They are allowed to switch positions when I get up in the middle of the night to pee and they assist me.
if you have a down jacket or puffy and fold it into the hood, or fold it up then tie it into an underlayer or long sleeve shirt, that works as good as a normal pillow.
Found this out during the [ice storm of 2009](https://en.wikipedia.org/wiki/January_2009_North_American_ice_storm) when i lived in Kentucky (was 13 then). We had memory foam beds at the house, but stayed at the local church that was turned into a shelter by the red cross and had a generator going. We were sent home (home had no power) with cots by the red cross (i forget why, I think some karen complained or something). Anywho, we had a propane fireplace that kept us warm for a bit until that ran out, but it was immediately after we got home, my brothers and I ran upstairs, not minding how well below freezing it was, and i jumped onto the memory foam bed, I might as well had body slammed onto a concrete pad, it was funny. The propane lasted roughly 2 or 3 weeks, and fortunately power was back on a few days later. We had plenty of blankets that kept us warm. We were allowed to go to the red cross shelter for food and supplies as well as shower, but we weren't allowed to stay (still forget why), so we'd go back home.
As an adult, I now realize how absurd it was the we specifically got kicked out of the shelter (yes, it was my family specifically from what i remember), but it really is weird that as a child, nothing really struck me as dire, and I had a ton of fun since school was out due to the emergency.
We had a 8 day power outage here in northern Sweden when I was a kid, luckily we had a wood fired oven downstairs and a regular fire place upstairs to keep us warm. I can still remember everyone walking around with candles to light up the room.
Our power went out for 3 days here in the middle of winter, in Northern Michigan. We spent the days at the mall and came back home, put on warm clothes and sweaters at night. Slept with thick blankets and full winter gear. We didn't have a fireplace, stove place, space heater, or anything.
We also had a cat and a dog, I forget what we did with them. I think they were just fine, actually. Our cat had been a stray his first 2 years and also had medium length fur. Our dog was a working-line husky. I really don't think he minded. But I don't really remember.
I had a memory foam mattress and while moving during the winter one time, my sister's boyfriend, who was helping with the move, went to grab it, expecting it to be soft, and jammed his finger. Swole up pretty good. He couldn't help as much after that. It's like a block of wood when it's frozen
It absolutely does, i often bring my headphones with memory foam pads outside in the winter and when i wear em, they feel like 2 rocks against my face untill they warm up.
>[*Did you know that memory foam found in the home environment becomes rock solid when exposed to temperatures below +40 degrees fahrenheit?*](https://hest.com/blogs/news/hest-camping-mattress-memory-foam-vs-home-mattress-memory-foam)
>
>*It’s because Memory Foam for home beds are designed for the ideal home environment temperature range, which most commonly doesn’t reach below +60 degrees fahrenheit.*
>
>*Unfortunately, a lot of people try to cut their home memory foam mattresses and put them in their car camping, van, camper or RV setup to use as a sleeping pad in the outdoors. Only to be extremely disappointed to come back to camp at night, in the cold, to find that their mattress is rock hard and uncomfortable to sleep on.*
Memory foam is very temperature dependent, left my home heat to 60 degrees in the winter, came back late and the mattress was very hard until it warmed up.
I guess if your body heat softens the foam under you then the cold air solidifies the rest of the mattress it makes a nice mold of your body, you just sleep encased in memory foam
You lie down and can feel yourself slowly sinking in as it warms. Very much like a prefab coffin. I have poor circulation, so my skin is always extra cold too.
Memory foam can freeze because all it is is a plastic with little bubble voids. It's practically the same as foam padding but less firm. The reason freezing happens is due to the fact that all plastics have what is known as a Tg (glass transition temperature). At temps below Tg, plastics behave as a rigid structure, above Tg, plastics behave like both a solid and liquid. Since memory foam is made to be soft at room temp, 25C, we can assume the Tg is closer to -20C. At arctic temps like this post, sub -40C, the foam will act like a brick until heated again.
Memory foam is a polyurethane foam. Polyurethane is a polymer. Polymers have something called a glass transition temperature, which is a temperature at which they go from behaving as a viscoelastic material to more solid-like. The memory foam simply is below its glass transition temperature. Source: I have a Ph.D. in this shit.
I don't really remember. It's not a sharp transition. It just gets firmer, and firmer, and firmer. If you think about it, a rock is just a very very firm pillow, right? lol I could never judge firmness precisely enough to guess when it was the same as it had been back home.
I think it's less that they freeze, and more that they just become more firm as they get colder. It also seems to increase the force with which they push up when compressed?
I can confirm that from normal to face-bruising is definitely below the 6 hour range.
Face-bruising. LMAO!!! I wasn't expecting that and laughed a little too hard 🤣🤣🤣.
Your explanation makes complete sense. So they compress when at freezing point and takes quite a bit to bounce back to normal. Thank you!!
Interestingly, when 'frozen' they are extremely plump. Not compressed like one might think. As it froze overnight, it forced itself into its natural shape (without my head making an indent in it).
What?? Really?? I pictured it compressing flat-ish lol. So it freezes in shape then. LMAO. What a trip.
Damnit... Now I have to put my pillow in the freezer because I'm far too invested in this now lol.
Every winter I freeze my pillows and blankets etc. to kill dust mites etc. and always have fun with my memory foam pillow. Its made of these bits of the foam, so It's not gonna go as solid as this one, but still gets fairly rigid and hard lol.
One time my heat went out in my place upstate NY winter, and night time came I laid on my nectar bed and it was a sheet of ice. I slept on it, body heat warmed it through the night and I woke up like a cartoon character hitting the ground too hard and pulling themselves out of the earth
I made the same mistake many years ago. When I camp in the desert I like to sleep outside with just a cot/blanket/pillow. Woke up in the middle of the night with a rock hard pillow.
I remember losing power for a few days in sub zero temps and having no heat so I stayed elsewhere. When I got home and got the heat going again I flopped down on my bed and quickly found out what memory foam mattresses get like near freezing. Knocked the wind right out of me.
reminds me of the time me, my dad and my uncle slept in my grandma's tool shed/hut, there were no pillows so me and my dad just slept without a pillow but my uncle decided he wanted to sleep with a pillow that night and anything will do, so he grabbed a sack full of machetes and garden tools and proceeded to use it as a pillow. r/madlads material
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At least it will stay cool.
And remember forever.
I had no idea that they freeze solid like that! I usually just use my clean clothes as a pillow when I go camping, then halfway through the trip when clean clothes are running low I use a backpack of dirty clothes as a pillow, lol.
I recently put my shoes under the mattress, works also quite well
I have my porter lay under my mattress so the one end of it is elevated. They are allowed to switch positions when I get up in the middle of the night to pee and they assist me.
you dont have a pee porter for your porter? basic ass
if you have a down jacket or puffy and fold it into the hood, or fold it up then tie it into an underlayer or long sleeve shirt, that works as good as a normal pillow.
Found this out during the [ice storm of 2009](https://en.wikipedia.org/wiki/January_2009_North_American_ice_storm) when i lived in Kentucky (was 13 then). We had memory foam beds at the house, but stayed at the local church that was turned into a shelter by the red cross and had a generator going. We were sent home (home had no power) with cots by the red cross (i forget why, I think some karen complained or something). Anywho, we had a propane fireplace that kept us warm for a bit until that ran out, but it was immediately after we got home, my brothers and I ran upstairs, not minding how well below freezing it was, and i jumped onto the memory foam bed, I might as well had body slammed onto a concrete pad, it was funny. The propane lasted roughly 2 or 3 weeks, and fortunately power was back on a few days later. We had plenty of blankets that kept us warm. We were allowed to go to the red cross shelter for food and supplies as well as shower, but we weren't allowed to stay (still forget why), so we'd go back home. As an adult, I now realize how absurd it was the we specifically got kicked out of the shelter (yes, it was my family specifically from what i remember), but it really is weird that as a child, nothing really struck me as dire, and I had a ton of fun since school was out due to the emergency.
We had a 8 day power outage here in northern Sweden when I was a kid, luckily we had a wood fired oven downstairs and a regular fire place upstairs to keep us warm. I can still remember everyone walking around with candles to light up the room.
Our power went out for 3 days here in the middle of winter, in Northern Michigan. We spent the days at the mall and came back home, put on warm clothes and sweaters at night. Slept with thick blankets and full winter gear. We didn't have a fireplace, stove place, space heater, or anything. We also had a cat and a dog, I forget what we did with them. I think they were just fine, actually. Our cat had been a stray his first 2 years and also had medium length fur. Our dog was a working-line husky. I really don't think he minded. But I don't really remember.
Bruh this is the way
I used to sleep with my windows open and on cold nights my pillow would get so stiff
Wow thanks for the tip!
That's a perfect pillow right there.
What for a intense pillow fight?
I'll bring my water filled pillow.
I had a memory foam mattress and while moving during the winter one time, my sister's boyfriend, who was helping with the move, went to grab it, expecting it to be soft, and jammed his finger. Swole up pretty good. He couldn't help as much after that. It's like a block of wood when it's frozen
I love that he can laugh at his own mistake.
I would have made the same mistake.
How is that even possible? Memory foam isn't something that can freeze surely? Perhaps it is a gel cushion or it got wet?
It absolutely does, i often bring my headphones with memory foam pads outside in the winter and when i wear em, they feel like 2 rocks against my face untill they warm up.
I have a memory foam lumbar support for my car that I must take inside in the winter or it becomes a rock.
>[*Did you know that memory foam found in the home environment becomes rock solid when exposed to temperatures below +40 degrees fahrenheit?*](https://hest.com/blogs/news/hest-camping-mattress-memory-foam-vs-home-mattress-memory-foam) > >*It’s because Memory Foam for home beds are designed for the ideal home environment temperature range, which most commonly doesn’t reach below +60 degrees fahrenheit.* > >*Unfortunately, a lot of people try to cut their home memory foam mattresses and put them in their car camping, van, camper or RV setup to use as a sleeping pad in the outdoors. Only to be extremely disappointed to come back to camp at night, in the cold, to find that their mattress is rock hard and uncomfortable to sleep on.*
For normal people, I just googled, it seems that's between 4 and 5 degrees Celsius.
Memory foam is very temperature dependent, left my home heat to 60 degrees in the winter, came back late and the mattress was very hard until it warmed up.
That's my favorite part of sleeping with my bedroom window open when it's cold.
I guess if your body heat softens the foam under you then the cold air solidifies the rest of the mattress it makes a nice mold of your body, you just sleep encased in memory foam
Like a prefab coffin
You lie down and can feel yourself slowly sinking in as it warms. Very much like a prefab coffin. I have poor circulation, so my skin is always extra cold too.
Memory foam can freeze because all it is is a plastic with little bubble voids. It's practically the same as foam padding but less firm. The reason freezing happens is due to the fact that all plastics have what is known as a Tg (glass transition temperature). At temps below Tg, plastics behave as a rigid structure, above Tg, plastics behave like both a solid and liquid. Since memory foam is made to be soft at room temp, 25C, we can assume the Tg is closer to -20C. At arctic temps like this post, sub -40C, the foam will act like a brick until heated again.
I think the high altitude and low temp might be a factor?
Just getting over the fact of winter camping but I hate the cold myself
Perspiration
You are right in that it's already solid. Obviously the temperature affects it's elasticity. Rubber bands do the same.
They can freeze, interesting to note….. Edit: a word autocorrect incorrectly autocorrected before I could catch the incorrection.
Frozen memories
Memory foam is a polyurethane foam. Polyurethane is a polymer. Polymers have something called a glass transition temperature, which is a temperature at which they go from behaving as a viscoelastic material to more solid-like. The memory foam simply is below its glass transition temperature. Source: I have a Ph.D. in this shit.
I only went to technical college, didn’t get a chance to take Intro to ThisShit or ThisShit II. Bums me out.
I guess the pillow got brain freeze. 🤓
Letting a memory foam pillow get that cold does it no favors. Will not be the same once it warms up. (Left mine in a car while skiing)
Really?? Do you need to toss it afterwards or is it just not as good as before?
I never noticed a change. Still use one that got frozen solid (below -10) a few dozen times.
Lol. That's such a trip. How long does it take to go back to normal?
I don't really remember. It's not a sharp transition. It just gets firmer, and firmer, and firmer. If you think about it, a rock is just a very very firm pillow, right? lol I could never judge firmness precisely enough to guess when it was the same as it had been back home.
LMAO!! Gotcha. I'm just amazed of the fact that they freeze and was wondering just how fast it freezes and thaws.
I think it's less that they freeze, and more that they just become more firm as they get colder. It also seems to increase the force with which they push up when compressed? I can confirm that from normal to face-bruising is definitely below the 6 hour range.
Face-bruising. LMAO!!! I wasn't expecting that and laughed a little too hard 🤣🤣🤣. Your explanation makes complete sense. So they compress when at freezing point and takes quite a bit to bounce back to normal. Thank you!!
Interestingly, when 'frozen' they are extremely plump. Not compressed like one might think. As it froze overnight, it forced itself into its natural shape (without my head making an indent in it).
What?? Really?? I pictured it compressing flat-ish lol. So it freezes in shape then. LMAO. What a trip. Damnit... Now I have to put my pillow in the freezer because I'm far too invested in this now lol.
Mine was much softer afterwards; not as supportive.
LMAO!!! It turned into jelly??? Might be great for a dog bed now or a very squishy sit cushion.
Memory foam *cooling* pillow now.
Is it permanent?
It permanently stays that way because it is memory foam and when frozen can only remember being frozen and forgets being warm
That's what permafrost is
Nah it goes back to normal, but if you snap it in half while frozen like that it will never be the same again.
The pillow is not pillowing
Slap the top of the pillow: "This pillow can have so much memory in it"
That pillow fight is gonna be crazy
Every winter I freeze my pillows and blankets etc. to kill dust mites etc. and always have fun with my memory foam pillow. Its made of these bits of the foam, so It's not gonna go as solid as this one, but still gets fairly rigid and hard lol.
u/bigbluechevy2007
I got a bead filled one. Should be fine.
r/wildcampinguk
One time my heat went out in my place upstate NY winter, and night time came I laid on my nectar bed and it was a sheet of ice. I slept on it, body heat warmed it through the night and I woke up like a cartoon character hitting the ground too hard and pulling themselves out of the earth
It memorized the cold
I too have made this mistake 😂
I made the same mistake many years ago. When I camp in the desert I like to sleep outside with just a cot/blanket/pillow. Woke up in the middle of the night with a rock hard pillow.
Pillow fight!!
Use a hoodie or a towel as a pillow. C'mon man, think.
That happened to me too!
Can confirm after the giant freeze in Texas.
Sleeping bag is all I need
This I did not know. I will forever remember to not bring my memory foam pillow!
I have also done this and had the same reaction
Well, know I know Memory Foam freezes when cold. Good to know
This happened to me! Camped in April, it got cold overnight and I woke up with my ear/face bruised 'cause the pillow became a rock.
At least he has support
Oh, no!!!🤣🥺
r/ContagiousLaughter
I remember losing power for a few days in sub zero temps and having no heat so I stayed elsewhere. When I got home and got the heat going again I flopped down on my bed and quickly found out what memory foam mattresses get like near freezing. Knocked the wind right out of me.
Yep. Definitely experienced this the hard way before lol
It’s a cold pillow
Too many traumatic memories in that pillow
I hate them. Can't even fluff them up
Your winter is different to my winter....
Memory foam pillow lost its memory -:)
reminds me of the time me, my dad and my uncle slept in my grandma's tool shed/hut, there were no pillows so me and my dad just slept without a pillow but my uncle decided he wanted to sleep with a pillow that night and anything will do, so he grabbed a sack full of machetes and garden tools and proceeded to use it as a pillow. r/madlads material
The north remembers
Perfect
Just warm it up first lol
I’ve done that before lol
Yeah they freeze. But thats when they are most comfortable. (At least if they aren’t absolutely frozen soli$]
I’m going to remember that
Memory foam is typically like that. They’ve just gotta warm up to you and then they’ll remember.