I experimented with a roll of insulation bubble wrap from Home Depot. 24" wide roll, stuff about 1/4" thick, sandwiched between two layers of aluminum foil.
The label even showed a picture of a backpacker in the snow carrying a roll of the stuff on his backpack.

My experiment was to use the stuff while sleeping on the carpeted living room floor for a week.
The bubbles didn't pop but they did start to go flat in areas subject to bearing a great deal of weight for hours, like the bubbles under my butt. I also think the bubbles distended and flattened in general whenever my body weight rested on an area, like under my knee, palm of my hand or elbow.

I decided it was not durable enough, even on plush carpet.