Many pads are bulky and a pain to pack. This one is more smaller is thickness. It is very warm for what it is however in -40 degrees it does not hold up in warm even with a -20 inflatable pad and -40 sleeping bag with a liner. Would highly recommend for warmer climates.
I bought this because I was tired of sleeping on the ground and freezing. It works pretty good, I bought it on a backpacking trip to Hatcher's Pass with elevation just over 4,000 ft. The pad is easy to pack, it does the job in the description, I would buy again.