Bill - I have now tried the bubble wrap you sent me and it seems to work great, except if I put my weight on my elbow on the bubble wrap, the bubbles pop. The bubble wrap weighs a bit more than the REI blue foam, but it really packs down more compactly. I just used the bubble wrap this weekend at Pt Reyes. I had lots of condensation on top of the bubble wrap. This is coastal camping with heavy dew every morning, so I am not sure that this would not happen for most types of pads. I also use an x-small pro-lite on top of the bubble wrap because the bubble wrap is not cushy enough for my old hips.