micp512689 wrote a review of ALPS Mountaineering Elevation Sleeping Pad on July 15, 2014
Familiarity: I've used it several times
Ordered this pad off of Steep and Cheap for about $40 as my current Therm-a-Rest is approaching 15 years old. Was surprised by the packed size being so small, and the pad being so light.
Have used the pad for about five nights now, and find it very comfortable. Inflates incredibly thick (3.5"!), but I find it a little narrow at only 20". I tend to be a stomach sleeper so it's not too bad, but your arms do hang off of the side.
Inflation is simple, and only takes a minute or two. You essentially give the pad CPR on a foam block. Very few moving parts to fail.
I'm not certain two brass valves were necessary, removing one would have saved (very slightly) on weight.