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Considering the wide range of people making their own gear, I really struggled to find direct comparisons.
However, from what I understand, the primaloft gold is slightly warmer (clo value 0.92 oz/yd2), compared to Apex (0.82 oz/yd 2). The lay-off is that primaloft is a pain to work with, and requires much more quilting, this is due to the structure: Primaloft is lots of little fibres, compared to the continuous fibre of the Apex.If you are set on a primaloft jacket, might be easier to butcher a 2nd hand extra large.
Kurai-
Thanks, that's not a huge difference.
I have a PHD jacket that is incredibly warm, too warm. And also a bit bulky. I wanted to make another with slightly lower g/m^2 insulation. The PHD was great in Kyrgyzstan when it was -8, but a bit much otherwise.
I was going to buy a rab xenon, but they changed it from primaloft.
skinny
Anyone seen any research on primaloft gold V Apex climashield V polartec alpha.
I want to make a new jacket, that fits good. But it's hard to get anything but apex.