Emergency Sleeping Bag Survival Bag,Cymuber 2 Pack Transportable Waterproof Thermal Bivy Sacks Tac Bivvy Baggage,84″x36″ Tenting Mylar Sleeping Bag Survival Gear Emergency Blankets Survival Shelter

Normal Mylar Baloon thickness emergency sleeping bag
This survival bag comes in a drawstring pouch, which is about 4 inches long and 2 inches diameter. The pouch has an attached whistle, but it requires a huge amount of air to make a sound, so I wouldn’t have this be your only emergency whistle. That being said, I bot this for the bag, and the whistle was just an added bonus.The bag is neatly folded within the pouch and unfolds into a sleeping bag which is the same size as a standard large rectangular sleeping bag. It has black stripes conveniently showing you which sides are sealed and which one is open. I am 6’1″ and was able to fully fit inside the bag with the top still wrapped around my head.Unlike traditional emergency blankets, the sealed edges on this bag make it so you don’t have to worry about gaps as you try an wrap it around someone. Once someone is inside, the only air going in or out will be along the top edge. will also work to provide some waterproofing and insulation with a traditional bag inside of it.If you have a flat surface clear of sharp objects, it is possible to fold the bag back up and fit inside the drawstring pouch again. Just make sure to get the air out of it before folding it up.As I stated in the description, the bag is the same thickness and material as a mylar balloon. It will resist simple punctures, but I recommend making sure you don’t have any sharp objects on you or on the ground as you use this bag – to prevent puncture or tearing.

Useful emergency survival bag–Good Value, but not very top quality
Twenty years ago I spent the night shivering in a wet thinsulate jacket in the wilderness after a fresh heavy snow and temp down to 15. I learned hypothermia is not an easy way to go. I bought space blankets and other items to make several survival kits stored in small ziplocks. The mylar space blankets made back then are heavier and thicket than these survival bags, but were blankets not bags. These bags are easy enough to open and unfold, but after unfolding it, are NOT easy to fold back up and fit in the stuff sack. One side and the bottom were sealed together with a black plastic strip-I don’t know whether it is adhesive tape or a thermowelded strip. They bags are generously large, but too thin–making them fragile to tears; I don’t know if the sealed edges stay sealed or if they are like tape and open up like one reviewer said.They do have an odor when you open them, but it is not strong–I don’t think I would open it to air and then try to fold it back up and struggle to get it back in the stuff bag. These are emergency blankets–they are not designed to be used multiple times. I haven’t compared brands or alternatives but assume there are more expensive stronger built bags. These bags are well worth the price–they are only $5 1/2 bucks each in a 4 pack. I wouldn’t treat these as multiple use-they are meant to be kept in vehicle in the northern states, to be used if your car goes off the road during a bad snow storm, and the temperature drops. Beware of wearing your clothes within–you will get sweated up because the bag is not at all porous. Getting out of a bag with wet clothing in bitter weather would be both dangerous and painful. Hypothermia hurts.I recommend the bag–and a four pack is a good idea–keep one in each of your vehicles, and another in whatever pouch or bag or pack you use on your forays into the woods. For the price this is a good deal I plan to keep this with a space blanket, candle, waterproof matches, butane lighter, in my fanny pack when I go off into the woods late fall and winter.