Balaclava that allows me to breath while running?

it's the fastest drying fabric I've tried yet :)

"Is powerdry HE the fastest drying fabric you can get?"

It might be in the top 7 or so, but certainly not the fastest by any means. Drying time is related to 4 things in about order of relative importance to each other. Thinness/thickness of the material (the thinner it is, the faster it will dry), weave of the material (either tight weave or large voids like in fishnet are best for drying quickly), the material itself–moisture regain, water retention, etc, and then wicking potential if it's not a fishnet type material.

PPHE is a fairly thin material, but not the thinnest, weave is mostly good for drying fast in that there is a lot of void material but then a medium tight weave on the top layer, which is fairly good for drying time, material is mostly polyester but a good chunk of moisture retaining spandex, and wicking is fairly good.

Yet, OR Echo shirt fabric is even thinner, more purely polyester, and very wicking, so it will dry faster.

However, nothing beats Polypropylene fishnet in this though, NOTHING, you can literally dunk it in water, shake it a few times, and then put it on, and have it feel pretty much completely dry within a minute if not seconds. Yes, those Nords know cold weather and what they are doing..

I realize we are talking balaclavas here and a PP fishnet balaclava would be kind of silly (and maybe even scary to some fellow hikers), but i was just generally answering a general question about fabric and drying time to elucidate the main principles behind it. Most of the credit should go to Richard Nisely, as i'm mostly summarizing and parroting his info/research on the subject.