Men's Emergency Thermal Blankets (10 Pack)

This product is probably what you think it is. One of those loud, crinkly, reflective "space" type blankets. They're fairly cheap, and you get a lot of them. They're very useful for keeping a person warm if you know how to use them.Some people complain that it doesn't keep them warm at all. This is most likely because they aren't using it properly. There are better articles for this information than this review, but essentially.. This blanket prevents heat-loss from radiation (which is how the majority of our body heat is lost). Radiation is when heat radiates away from its source. This is where the product shines: it allows hot pockets of air to form between you and the blanket. It doesn't do much to protect against conduction since it's so thin. Conduction occurs when heat transfers from one place to another by touching. When you grab an ice-cube, you are losing heat because of conduction. Similarly, if you are in a very windy area, while the blanket itself is wind-proof, the cold air can get under and inside the blanket, stealing away your warmth.As such, when using this blanket, you should squat down and wrap it around you. By laying on the bare ground, there is no "dead air space" for the hot air to collect so, by the process of conduction, your body looses heat through the ground. This product works really well as a sort of "base layer" type of blanket. If you have a sleeping pad and sleeping bag, line the insides of your sleeping bag with one of these and you'll be toasty in no time. Just be sure not to start sweating too much, because of hypothermia and stuff. Even without those fancy sleeping bags, one of these covered by a wool blanket will keep you very warm. Just remember not to wrap the blanket to tightly around you. It is instinctive when you want to get warm, but it'll decrease the effectiveness and may rip it since it's so frail.Five stars because it does what it is intended to do. And while it's quality isn't super, and it isn't made out of top-notch ballistic nylon, it isn't being marketed as if it were. It is intended to be a cheap, disposable cover to be used in emergencies, and it does that job wonderfully.

I have been using these blankets for over a decade, they go with me in my car, every survival and first aid kit, and of course whenever I go backpacking/hiking/climbing.They have so many valid uses like :An emergency shelter or overhead canopy to keep rain and some wind out. If you want to use it as a flap or tie point: then you'll want to put a small smooth pebble or something about that size a few inches in from an edge/corner, and fold the blanket over and tie around the base of it. If you want to poke through it for a stake down or line run through point, you'll probably want to put some tape around it (probably before you poke through it) to reinforce it. It's effortless for a puncture to continue spreading given any force against it on this material. You can also use it as a sort of heat reflector from a fire thats close to a lean-to style shelter, using it as the roof/backing.A ground tarp or footprint. Works good if you have an open bottom or netted bottom tent. Or just a really thin tent/bivvy base that you want to give a little extra protection to. Yes this isn't really puncture resistant, you need to clear off the ground carefully first - as you should be anyways. Also works decently as a dry/clean ground tarp to put equipment or shoes on.A surprisingly warm blanket in a pinch. They say it works best if you get naked and wrap yourself as tightly as possible in this. I think if you have thin/tight fitting clothing you'll be alright to leave it on, but it probably isn't as useful with thick coats/layers. It works by reflecting body heat. I've relied on these blankets twice for this reason so far, and both times I was pleasantly surprised. One time I was about 2miles from my tentsite getting water, when a freak thunderstorm hit, with shorts and no shirt, by the time I had ran back to my tent in the cooled temperature I was shivering uncontrollably. With only this blanket and a single hand warmer I went inside my bivvy and curled up inside of it for about 30min or so, and fairly certain it saved me from hypothermia. The second time it had gotten a lot colder then I expected on a warm day (dropped around freezing). All I had on was summer clothes + rain shell, I curled up next to a small fire with this wrapped around me tightly, and slept for a good 4hrs no problem. Note though small embers/sparks will burn holes through it really easily, but would not catch fire from it.It is a must have for any house/car/trip/adventure. The 10 pack on amazon is one of the best prices around for this product. I go through several a season they get used so often. These are 84" x 52", reflects 90% of your body heat, and weighs 38.5 grams roughly (without the packaging they come in - a little ziplock bag).