I'm ordering materials for my KAQ. Outdoor Wilderness Fabrics(OWF) no longer carries Polarguard 3D, but Climashield. From my understanding of the Climashield documentation on their website. It's somewhat less warm than Polarguard with a CLO of .77 per oz vs 3D's .90. OWF says the thickness is about 1/2in at 2oz sq yd. What do you all suggest? Maybe I should email Patrick directly. Are there any sources left for PolarGuard, and ClimaShield is what we'll get from now on.