Emergency Mylar Thermal Blankets -Space Blanket Survival kit Camping Blanket (Pack of 6). Perfect for Outdoors, Hiking, Survival, Bug Out Bag ，Marathons or First Aid

Most emergency supplies never do get used or tested--so it occurred to me that I should actually put some of these space blankets to use and see whether they work for insulating a space (and if they might really save your life in a winter emergency).I've taken a few of these blankets from the pack, opened them up and draped them over a bakers' rack to close it in, with some duct tape to secure them. The duct tape adheres to them very well, and while the mylar material feels so flimsy you'd think it would instantly tear, they're actually pretty hard to cut. I had to use scissors to make openings for cords, because I couldn't get through the mylar with just my hands. However, the mylar DOES scrape off pretty easily, leaving clear plastic behind--so don't drag these around a bunch of sharp objects or you'll lose that mylar coating.The grow lights on the shelves inside this enclosed bakers' rack produce some heat, but they're in an unheated shop space that is currently sitting around 45 degrees F. It is protected from wind, and kept above freezing, but there are minor drafts. Without any enclosure, the lights were not capable of heating the trays of seedlings enough to prompt germination. Literally minutes after wrapping the top and sides of the rack with these space blankets, the temperature in the rack rose to 55 degrees F--the bottom isn't enclosed at all and the grow lights are LED, so they're not cranking out all that much heat. Given those circumstances, I'm pretty impressed with the amount of insulation just a single layer of mylar provides!Weirdly, you can see right through these space blankets once the grow lights are on. It's like looking through a 2-way mirror. Might be a useful trait to explore; for the grow tent, it's neat because I don't have to open up the enclosure to see the seedling trays inside.So, not really an emergency test for these space blankets, but I'm happy to see that they really do capture heat and provide insulation. I think I'd want multiple layers of them around me if the weather were extremely cold and I needed to stay warm in an emergency--one layer, as I mentioned, is only keeping the plants about 10 degrees warmer than the surrounding atmosphere, in an area protected from wind. If the emergency scenario involves freezing conditions, I think more than one layer would be necessary for survival.

Put in bug out box for an emergency, but appeared to be good quality

We bought these blankets to use in case we ever have to go without heat. They're exactly as described, packaged individually for long-term saving.

lightweight good ease to use heat ok

I bought this to have in case of emergency kit.

Saw these advertised on TV and found them here. Ordered 2 packs of 6 each; kept some and gave some as Christmas gifts. Recommend them for safety. Be sure to store them somewhere convenient in a place where you will be reminded frequently that you have them ready.

When we were being roasted out with 100 degree weather, my air conditioner decided to take a dump. It is central no less and I have pets. So while they were vacillating to replace it, I bought these little beauties. I taped them to my windows. I taped them to the upper frame of my window and they helped keep the heat out as well as the sun. I felt they were amazing as I live in a upstairs unit. I still have them on my windows because it is now cold and they also keep the heat in during cold weather. I cannot recommend them enough. I learned about these Mylar Thermal Blankets on National Geographic, and they absolutely work.

Great item to carry in your vehicle just in case the need arises