Sitka Kelvin Aerolite Optifade Subalpine Jacket

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NEW for 2021.  Sitka gear continues to be on top of the specialized hunting gear market by incorporating an innovative new technology from Primaloft into their hunting clothing. Aeorgel infused Primaloft Gold insulation, that they are branding as Aerolite, is the core material this program is built around.  This lightweight, compressible jacket provides incredible warmth with minimal weight and wears comfortably under any outer shell for extra warmth even when wet.  The polyester outer face of the jacket is super thin and will go practially unnoticed under an outer layer but still hold up exceptionally well to the brush and burrs of any hunting scenario if worn alone.


Primaloft Gold Synthetic Insulation with AerogelPrimaloft has put little balls of air into each fiber of its synthetic material, called the aero gel on those fibers, and what does that does is incorporate air as the greatest insulator.  So, what Primaloft has been able to do is not just have fibers that trap dead air to keep you warm, but they have these little balls of aero gel that add insulation, and resist compression.  Built in conjunction with the US Military in order to replace 650 fill down with something of the same insulation value, hunters can now enjoy an insulation package that is more sustainable, that manages moisture exceptionally well, is incredibly lightweight, and compressible.  At ~30% warmer than down when dry and over 90% warmer when wet because of the air gel fibers, the Sitka Aerolite collection needs to be your insulation solution in cold and wet applications.


  • Weight: 16 oz.

  • Synthetic PrimaLoft® Gold Insulation with Cross Core™ technology replicates the warmth and compressibility of down, but with the benefit of warm-when-wet performance

  • Lightweight insulation (35% recycled) is infused with silica aerogel, a nearly weightless material that’s composed of more than 95% air and acts as additional thermal insulation

  • 20-denier polyester face with durable water repellent finish, 20-denier polyester backer

  • DWR finish resists precipitation and prevents face fabric from wetting out

  • Gusseted stretch cuffs allow for smooth, easy layering and unrestricted shooting

  • Fitted hood provides low-profile warmth and concealment; doesn’t obstruct peripheral vision

  • Deep, zippered chest pocket safely stores your valuables

Sub Category:
Jackets and Coats
Gore Optifade Subalpine
Insulation / Outerwear
20-Denier Polyester Face w-DWR, 20-Denier Polyester Backer
Primaloft GOLD Synthetic Insulation with Cross Core
16 oz. / Size: L
Product is Standard Fit, designed to wear versatile layers under this garment.
Machine wash warm using gentle cycle and down-specific detergent. Dry low heat with tennis balls to regain loft.
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