Amazon.com.au:Customer reviews: Emergency Mylar Thermal Blankets (4-Pack) + Bonus Signature Gold Foil Space Blanket: Designed for NASA, Outdoors, Hiking, Survival, Marathons or First Aid (Double Color Sides: Matte Black & Gold)
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Its as the product states a Mylar blanket these ones are little a bit more durable but I'd still preface treating them with care still they can rip but they are handy for emergency compact kits such as small medical kits where you don't have the room for a reusable thermal blanket. Honestly for what its worth I view this as a good emergency item that doesn't weigh a whole lot and can come in handy.
I received these quickly and they were good value for the money. I haven't opened it up yet to examine closely. I'm keeping them packed and thrown in an emergency duffle bag we have in our home. After the freeze here in Texas, we wanted something that was waterproof to help wrap exposed pipes and keep ice and snow off of. Using some for that. Also using some, as I said, in an emergency bag for us should we ever need it.
I have not used these blankets yet & I hope to never need them. They are for a back up, if I should ever do any winter travel or plan on staying outdoors. They are very low priced, small & light for easy storage. Everyone should have a few... just in case.