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A New Paradigm for Understanding Garment Warmth
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Brett Peugh
(bpeugh) - F - M

Locale: Midwest
thanks on 03/19/2012 20:12:45 MDT Print View

Yeah, I just wish my XLT was bigger to fit better.

Christoph Blank
(chbla) - F

Locale: Austria
Primaloft vs Polartec Alpha on 01/04/2015 15:37:36 MST Print View

Dear Richard Nisley,

I'm looking for synthetic insulation and came across primaloft vs the new polartec alpha.
I wondered how vests and jackets compare, for example:

Rab Xenon X

Rab Strata Vest

(or the primaloft atom vest by arcteryx)
I assume that since alpha is more breathable, one needs more insulation (that might explain the additional weight of the rab strata vs the xenon).

Could you enlighten us a bit please?

Woubeir (from Europe)
(Woubeir) - F - MLife
Re: Primaloft vs Polartec Alpha on 01/05/2015 05:45:03 MST Print View

The Xenon X uses Pertex Quantum at 36 g/m².
The Strata uses Pertex Microlight at 49 g/m².

The Xenon X has 60 g/m² Primaloft One/Gold.
The Strata has 80 g/m² Alpha (the only available weight at launch).

P1/Gold is, according to my calculations, 2,5 x as warm as Alpha. Plus the fabrics used for Strata are, hopefully, a lot more air-permeable than those used for the Xenon X.