Neoair vs. Neoair All Season

Thanks Steve, very interesting [trailspace link]. So a flat all-season has an R-value of 1.5? Whodathunk!

Cheers,

Rick

Interesting…I wonder what Thot and Tcold Roger used to det. the Rvalue. If we are to believe the radiant barrier has any significant contribution to the overall R-value those temps are very important to the Rvalue equivalent measurement and how we try to generalize that measurement to other temperatures.

As I pointed at the R2.5 when flat is what is really driving my doubt. From what I have read / hear the Neo Air regular does appear to be as warm as promised.

EDIT: My speculation above was based on the incorrect flat Rvalue — as noted elsewhere I should have been using R1.5 in my argument

I would be very interested in how they came up with R2.5

I never seen that claim from Thermarest.
Franco

"From what I have read / hear the Neo Air regular does appear to be as warm as promised."

I have an original model, short, which does seem as warm as promised. Once I figured out the correct inflation it's more comfortable than other air mattresses I've used (POE, BA) too. All that and the tiny size are pretty compelling. Now, as to how they doubled the R-rating in the All Season by just adding reflective layers, I guess I'm swimming in the deep end here.

Cheers,

Rick

As per Steve's Trailspace link, my memory was off and the claimed R-value when deflated is 1.5 for the NeoAir All Season. That's quite a bit lower than R -2.5, but quite a bit warmer than just sleeping directly on the snow. I doubt other inflatable pads maintain significantly better R-values than this when flat, but maybe some of the synthetic pads do.

Franco, don't you misrepresent my misinterpretation used for speculation…:)
Good call on checking the R2.5. I remember reading a quoted Rvalue for flat somewhere just got the number wrong. It did come from the trailspace acticle reference in this thread. 1.5 is the value provided in that article (I am guessing they got that number from cascade designs but who knows for sure…)

Still, for a completely flat air mat I can only imagine a very cold ground or very hot body (each relative to standard camping temperatures). I would imagine a mat with a hole in it or busted seam would be completely flat under small of back, knees, neck and such but still…

But hey it might come in at ~R5, 19oz of 20"X72"…I've been suprised before…

as close as they were to the r value of the Neo Air, I have to believe they will be very close w/ the All Season

it is somewhat amazing that for an extra 5 oz (comparing regular to regular) they can double the r value AND offer a more robust pad

I don't see anyway of adding an additional ccf pad (of similar length/width) to a neo air to get to r5 for 5 oz, from the pads I looked at would be closer to double that

you could certainly argue that the cost and versatility of a neo air + a ccf pad is better, but not weight