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.
 
Made from durable, insulating Mylar, it reflects back an impressive 90% of body heat, keeping you warm in even the harshest conditions.

Reflecting 90% of body heat is impressive, but I do wonder if that means it gets too stuffy inside, especially for folks who run warm like me. Has anyone actually slept through a whole night in one?
 
Haven’t had mine tear, even after a few rough outings—Mylar’s tougher than it looks. Anybody ever try patching one if it does get a rip?
 
In my experience, these thermal sleeping bags are a good buy. They're surprisingly comfortable and the heat reflection works a treat. Used one in cooler nights in the garden and found myself snug as a bug. Regarding packability, they fold up nice and neat. Barely takes up space in my backpack. Quick question to those who have used it more regularly - does the reflective coating hold up over time and multiple uses?

The reflective coating does hold up for a while, but after a few uses I noticed a bit of flaking, especially where it folds sharply. I try to air mine out and avoid crumpling it too much, but it’s just the nature of those thin mylar layers. Totally agree on the packability though—so handy for tossing in a tote or an emergency kit. If anyone’s found a trick for making it last longer, I’d love to hear it!
 
Using one of these a few times out in the garden and during early spring camping, I found the warmth to be impressive for something so light. The noise is a little annoying but you forget about it once you’re cozy. Condensation does build up if you’re zipped in tight, but opening it a crack helps. Anyone tried layering it under a regular sleeping bag for extra insulation?