I've had this pad for several years. It is great, but there are things you should know. It is more comfortable than the ground, but I see this pad a must for warmth more than I do for comfort. This will help you reach the temperature rating of your sleeping bag without adding much weight to your pack.
My pad has been used on numerous backpacking trips. I've used it to do work beneath my car on pavement and gravel. I have taken it to outdoor movies ect.. After years of use it has help up extremely well and is just as effective now as it was the day I obtained it.
I have upgraded since, but it is nice to have an extra pad for friends or to double up with an inflatable pad during the winter.