NeoAir XTherm NXT

I use a Thermarest Neolithic Xtherm NXT. It’s honestly the most comfortable thing I’ve ever slept on and keeps me warm in any circumstances. Weighs very little also, and they’ve really cut down on the noise with the NXT. Couldn’t go back now. I love it too much. I am quite small and don’t have a dog though so YMMV.

My Thermarest XTherm is honestly more comfortable than my bed. I love that thing, and I do tend to be a bit picky about sleeping.

I don't think the comfort is the best for the Xtherm, but it's comfortable enough for me. And very warm, I have yet to feel cold when using it (in Norway and Iceland for instance).

THIS! The new one is perfectly fine! I´ve used it on a 10 day trip above the arctic circle and i slept really well, every single evening!

I have the xtherm nxt and would recommend it. It has a good r value especially considering it's size and weight. The nemo tensor seems to be recommended a lot too in the ultralight space.

I have the Neve Waratah quilt(-2C version) and prefer it to my Sea to Summit Spark sleeping bag. I use it with the Therm-a-Rest NeoAir XTherm NXT sleeping mat. The mat is a R 7.3 so might be too warm for you but I’m a cold sleeper. However that being said I have used it in summer in the Blue Mountains and I didn’t overheat but I’m not sure how it would go if the weather was a lot warmer.

Quick question first: how early do you think you’ll actually hit the Sierra? I’d really base this decision on expected nighttime temperatures rather than specs alone. It’s worth checking the average lows for a normal snow year around the time you expect to be there. If you realistically expect to sleep often below ~20°F, I’d at least take a serious look at the NeoAir XTherm NXT. It has a significantly higher R-value than the Tensor All-Season and actually weighs a bit less, which is kind of hard to ignore if cold nights are likely. If those temps aren’t necessary and you’re mostly dealing with teens to upper 20s at the coldest, the Tensor All-Season makes a lot of sense for comfort and noise. And if it ends up being warmer overall, the NeoAir NXT (XLite) is still a solid lighter option. Personally, I’d let the expected temperatures make the call.

I find the xtherm nxt pretty quiet if it's well inflated. It's more comfy but noisier if softer.

Thanks for your review - great to hear from someone with it. And the price point is fantastic. Fyi, I've got a thermarest xtherm and it uses 70D nylon on the bottom. But it was £180 2nd hand, so not really comparable ;-)