Compact, LIGHT, and versatile
This is the perfect solution for ultralite backpacking if you're willing to carry just 3 extra ounces to provide some comfort. I use it while camping, backpacking, and I even stick it in my computer bag to carry around campus so I can plop down on it instead of the ground. BONUS: I also use this as part of a pillow system -- I take this pad, folded in half, and shove it inside a therm-a-rest stuff sack pillow... THEN I shove my Western Mountaineering cloudrest pillow in the sack on top of the lite seat for an INCREDIBLY comfy, lightweight pillow. All three things together weigh 11 ounces, and since they're all versatile it's worth the weight to me.
Anyway, if you're looking to save your butt from the uncomfortable ground or an airplane seat, OR a movie theater seat, just get this. It rolls up super small to fit just about anywhere and it only weighs 3 ounces.