Those are the only two aspects of my NeoAir XTherm 2nd that I can find anywhere on the sleeping pad.
Given the normal price tag of $219.95, the $153.97 that I paid for this is awesome!!
I have had it inflated since I got mine, spent about 45 minutes total taking a nap on it yesterday, and so far it has stayed totally inflated without needing to add any additional air since it was originally inflated.
110 grams (3.88 ounces) heavier than my NeoAir XLite Large.
2.5 higher R-value than a NeoAir XLite Large.
70D bottom material rather than 30D on the XLite.
Everything about this pad really is making this a leader in the inflatable air pads world for winter time use.
Plan on attaching some velcro straps to it and then a zpacks pillow this weekend. Will be interested to see how the cf tape sticks to the top of the XTherm.
On a comfort level: It is seriously more comfortable than the Klymit Static V and oddly it even seems to be more comfortable than the NeoAir XLite - I think this might be a result of the slightly heavier material providing a slightly more ridged pad, but just a theory at this point.
As a side sleeper, I have yet to bottom out on it. I do bottom out on my XLite, which is the same thickness, so perhaps the slightly heavier material is actually proving to be a bit better, even given the additional 100 grams or so it adds. Again, just a theory at this point, need to get it onto the trail for a couple weeks to really know how it will do.
I was sitting around yesterday pondering on how it would do in a hot weather environment. Suspect it might cause you to overheat from the additional r-value, but if it has the ability to not increase your core temp while using it in a hot weather environment than this could pose to be the best all year around sleeping pad out there - from a numbers perspective.
I am thinking my game plan for using this pad this winter is going to be:
The AMK SOL Emergency Blanket at an unknown r-value (been testing this as a ground cloth since it was released and so far very impressed with it)
GossamerGear ThinLight 1/8th at ~.45 R-value
And on top of those would be the XTherm. This setup should give me a decent bit of protection and a bit of additional r-value.