Great in combination with the Prolite
I have a short Thermarest Prolite and needed either a Z Lite or a Ridgerest for winter camping and additional comfort and I am really happy I decided upon the Z Lite. All-in-all it takes up less room than the Ridgerest and it is super light. I took it down to the desert a couple weekends ago and it worked great. I am a side sleeper and my hips were not sore after sleeping on the Prolite/Z Lite combination after a few nights.