User Review: Therm-a-Rest RidgeRest
Price Paid: $15
It's like sleeping on a grill. It's so warm! At 9oz it couldn't be any warmer for the weight.
The bulk, however, is a little out of control. This thing does not compress for crap! I'm pretty quick to throw things out of the pack because they are too heavy OR too bulky, but this my one freebie super bulky item because it's so light, warm and comfortable. It's hard to beat the price.
You could also use it to make a splint or use it as a flotation device.