Used on top of a self-inflating pad when sleeping on snow, so can't really comment on comfort. However, I found the folding design much preferred when using the pad for sitting on snow while eating, taking a break, etc. Rolled pads tend to have "memory," while the Z-Lite can easily be folded for two or three-layer comfort. I also found the egg carton design kept stray snow deep in the holes, keeping the "sitter" warmer and drier. Great product.

The ThermaRest Z-Lite is the sleeping pad that I take with me on every one of my backpacking trips. When packed it sits nicely strapped to the bottom of my Gregory Baltoro 70 pack and does not get in the way even when scrambling. On one occasion it has prevented me from hitting the ground hard after slipping on some rocks. The Z-lite provides a great deal of warmth and comfort on cold ground or rocks and due to the fact it is closed-cell foam it will not get soaking wet during use. Minor wear has occurred on the edges but the pad has held up extremely well.

One of the best pads I have ever owned. The minute I lied down for my first night with the Cascade Designs ThermaRest Z-Lite, I instantly felt the difference and comfort this pad had compared to other sleeping pads I have owned in the past. And the egg carton shape design kept me very insulated from the ground. For a second I forgot I was even sleeping on the cold hard ground. All in all, a very good sleeping pad.