Okay, please bear in mind that I have NOT used the version above (10.5 oz and 1.5 inches thick)
But - I have used the very similar Über Lite Sleeping Pad (9 oz and 1 inch thick)
From my experience, I found the contoured shape a little bit weird. It didn't fit my torso very well. I am tall, and other tall folks had the same feedback. Shorter folks did fine. Also, the hard plastic valve is positioned in the center, right under your head, and this proved to be an uncomfortable place for my sensitive noggin at night.
Plus, I am a squirmy sleeper. This pad SHAPE seems to do best when I'm lying flat on my back.
The pad I find superior to the Über Lite is the Bozeman Mountain Works TorsoLite Inflatable Sleeping Pad (approx. 10 oz, 1 inch thick and 32 inches long). My squirmy sleep habits make this a MUCH better pad for me.