Nest sleeping pad if you're looking for an ultralight one!I had a few sleeping pads so far and this is by far the best one (but also the most expensive one). It's super light weight and packs SO small! Also it's very comfortable for a sleeping pad. But it makes some squeeking noises when you move in your sleep which can be quite loud sometimes. I have not tried in very cold nights (below 7°C) so I cannot rely tell about the isolation right now.
I would recommend this sleeping pad for everyone who wants to save some weight and space when packing! It's a little bit more expensive than other pads from therm a rest but also very comfortable.