Bought for my son who skis, cycles & camps.
Makes me feel better re his safety.

very compact- have not used them, but am hoping they are as good as listed

This item is good to have for an emergency

Great product! Easy inflate and deflate! Keeps you comfortably off the ground. Very sturdy as well. Can be used also for car camping in SUV

I keep a couple of these in each car, and one in each of my packs. Have I had to use them? Thankfully no. But inspecting my purchases the bags seem like they would provide some additional protection.

Thanks for helping me prepare for an emergency.

I'm 6' and ~250lbs (not a small person) and I fit in this bag with comfortable room to spare. Standing up is easily covers my shoulders and if I crouch a little (or bend my knees a little while laying down) I can cover my head.
I went outside in ~35F, very windy and raining weather wearing jeans and a t-shirt and was fairly comfortable, though you do need to insulate yourself from the ground in something like this if you are planning to lay down.
It seems reasonably durable, and would probably last a couple nights if you were very careful to avoid anything sharp. Definitely sturdier than the mylar bags at a cost of just a little more bulk. I would recommend including duct/packing tape in your emergency kit for potential tears.
I'm assuming if you spent hours inside of it you will end up wet from condensation build up, as it's essentially a plastic bag, but I was not in it for that long.
Under idea circumstances (indoors with clean wood floor) I was able to roll it back up and get it back into it's little bag with out trouble. I think you could manage it outdoors, but i did not attempt it.
Overall a BIG upgrade to the little mylar emergency blankets.