Alpha Evolution

15" OPTIFADE Elevated II 1600G
Made in USA
In stock
Only %1 left
Regular Price $350.00 Sale Price $245.00

Made in USA with Imported Components

We outfitted the Alpha Evolution with premium features designed to enhance your performance across the board, 
and we spared nothing in the making of this boot. With advanced elements like Primaloft Gold insulation and Vibram ICETREK rubber compound, the Alpha Evolution provides superior capability and comfort for discerning hunters. Unlock every corner of whitetail habitat while remaining warm, dry, and hidden with Sitka® OPTIFADE™ Elevated II camo.


Style 376064
Weight 4.8 lbs per pair
Closure Slip-On
Height 15"
Insulation 1600G Primaloft
Color Camo
Camo Pattern GORE™ OPTIFADE™ Elevated II
Footbed Polyurethane
Shank Fiberglass
Lining Waterproof
Liner Jersey
Country of Origin United States
Manufacturing Made in USA with Imported Components

Made in USA with Imported Components

We source the best materials from around the world. Partial boot construction is done overseas and then shipped to be completed in our Portland, Oregon factory. Once in our factory, the boot uppers are prepared and attached to the outsoles. We then treat, clean, inspect, and waterproof-test them. This manufacturing process allows us to offer premiere rubber styles made in our USA factory.

Comfort Zone

  • Arctic
    -70 to 30°F
  • Cold
    -70 to 30°F
  • Mild
    -70 to 30°F
PrimaLoft® Aerogel Toe Cap
Used by NASA to insulate space suits, Aerogel is the world’s lightest solid comprised of more than 95% air. This toe cap provides superior insulation with minimal bulk or weight and doesn’t pack down over time.
Alpha Construction
Built with hand-laid premium, natural rubber over insulating neoprene for durability, flexibility and complete waterproof protection.
1600G Primaloft® Insulation
PrimaLoft® Gold Insulation performs in wet or dry conditions and maintains its thermal properties no matter how many times you wear your boots, making it the go-to choice for insulated footwear.
Made in USA
The Alpha Evolution is the outcome of over a hundred years of experience crafting durable, hardworking rubber footwear — and it’s proudly made in USA with imported components.
Complete your Sitka® Gear system with the only boots to use GORE™ OPTIFADE™ Concealment. This pattern is designed around animal vision and not human eyesight, preventing prey from ever recognizing you as a predator. The Elevated II pattern is specifically designed for whitetail hunters and is optimized for ranges of 80 yards and under, keeping you concealed 15 feet above the ground in your tree stand.
Neoprene Gusset
Durable, neoprene gusset accommodates different calf sizes and makes it easy to slide the boot on and off.
EVA Midsole
We use a rubberized EVA midsole that delivers superior cushioning and shock absorption underfoot.
The soft, rubber compound in Vibram® ICETREK allows for superior grip and traction on ice, snow, and other cold terrain without damaging interior surfaces such as flooring.

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