Emergency Survival Mylar Thermal 2 Person Sleeping Bag - Accommodates 2 Adults - 64" X 87"- by Grizzly Gear...

I'm (let's just say) "big boned" and don't really fit well in average sized sleeping bags. This is intended for two people and is more than ample for me as either a sleeping bag or a make-do tent. This alone makes this a "find" for me. In my somewhat limited experience most emergency (aka space) blankets are a reflective coating on mylar plastic. It does a great job keeping heat in but a lousy job breathing. I learned this when I let myself get over-warm in one of these and my perspiration left me damp, cold and uncomfortable. What I found works for me is to leave some room for air circulation. I don't wrap myself too tight. Better to be a little cool or cold and not sweat and have a bit of circulation to help keep me more dry. While this is reusable I seem to be incapable of re-folding these to anything near the folded size out of the package. Having this XL sleeping bag in my car is a comfort in case of getting stuck in a snow storm or just frigid cold (like we had in around New Years for several weeks here in New England). I'm not really a camping person, but as a tool for an emergency I'm very satisfied and hope I never need to use it! For a sense of peace of mind I'm giving this 2 person emergency mylar sleeping bag 5 stars.

Very (surprisingly) warm! We used this for a weekend camping trip. Note that it doesn't provide any padding, so if you're planning to use it for camping then it's best to have a sleeping pad. Contrary to some other reviews, we had no trouble packing it up and using it on multiple nights - it's hard to get it to fit back into its original packaging, but it fits nicely in a gallon Ziploc bag. One drawback is that the sleeping bag can be very noisy when you move around at night - like the noise of crinkling a huge piece of paper or aluminum foil. I didn't mind the noise, but other more sensitive sleepers (either in the sleeping bag or nearby) might be bothered by it. Finally, a warning against using the sleeping bag around freezing temperatures: we ended up camping in colder conditions than we had expected. Around freezing, condensation accumulates on the inside of the sleeping bag, so you will get wet and cold. Of course, the sleeping bag was not designed for such cold weather, so I don't deduct a star for this.

As you know, the point of these emergency blankets is to use them when everything else has failed. You are not at home (or the power and gas is out), you can't get to relatives, a hotel, or a Red Cross shelter... Or perhaps you are literally lost in the woods and thanking your lucky stars you threw an emergency blanket in your daypack.. The only difference here is that two people can fit, and if you have ever had to worry about hyperthermia, you know that the body heat of another is about the only way to bring up the body heat of the severely chilled person. On a trail crew as an older teen and we got one guy into a fairly serious hyperthermia situation after using a cold mountain lake to float materials for trail bridges a shorter distance than hiking them around the lake. Great idea, but several us of took too many trips. We had a sleeping bag with us in a day kit, but it lost most of its thermal capacity when it got wet from the guys soaked clothes (dumb us: take the wet clothes off first!...) One of these emergency blankets and with room for a second person would have been an easier way to get him back to normal, and taken a lot less space. From a price point of view, you can find single blankets for $5 to $20 bucks, depending on sale prices, quality and so forth. Thus, this double-sized version is priced at essentially no difference in cost and works for two. Construction is great. Four stars only because it's not a super premium version (which of course would cost more.) (EDITED to five stars, responding to a comment -- I agree.) These are designed for emergencies, so you are not buying this for multiple uses. This version seems to be at the right price point. Hope this is helpful.