Amazon Portable Emergency Blanket & Bivvy Sack Thermal Sleeping Bag - 2 Pack $13.52 @Amazon

The noise is kind of annoying, but the warmth makes up for it. Anyone tried doubling up with a wool blanket for extra insulation?
 
That matches my experience—stayed warm even when temps dipped below freezing. Has anyone tried doubling up with two blankets for extra chill, or is that just overkill?
 
Waterproof, windproof, and reusable, this emergency gear is not just for catastrophic events; it's also perfect for your camping and hiking adventures. Its extra-large size and bright black visibility strip ensure your comfort and safety.
I couldn't agree more, BakingQueen62. The versatility of this emergency blanket not only makes it perfect for dire situations but also useful for our outdoor adventures. I'm particularly intrigued by the bright black visibility strip you mentioned - it sounds like a handy feature, especially in low visibility conditions. But one thing does pique my curiosity - how does it fare in a downpour? Being waterproof, it's fair to assume it should hold up, but has anyone had the experience of using it in heavy rain? Also, given its size, how compact is it when folded up? I'm all for practicality and love to pack light when I head out. Would it fit into a small backpack or would it take up too much space?

Used mine during a downpour at Field Day last year—definitely held up against the rain, though you have to be careful about condensation building up inside if you’re zipped tight. Packs down small enough to fit into a radio go-bag with room to spare, so no worries about taking up too much space. The visibility strip helped my group spot me in the early dawn, which was actually more helpful than I thought. Not the most comfortable sleep, but in a pinch it beats being wet and cold.