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Advanced storm protection and temperature regulation in the alpine.

With its Primaloft Eco insulation and Tropozone waterproof breathable fabric, the Sierra Designs Prima Fusion Insulated Jacket is ready to tackle your next high-alpine adventure. The Tropozone 3L fabric features a PU membrane to protect against rain, falling snow, and high-speed winds, while a DWR coating encourages water and melting snow to bead up on the fabrics surface without affecting the garment’s overall breathability. Sierra Designs also included a touch of insulation for extra warmth.

  • Fully taped seams and water-resistant front zipper prevent the elements from sneaking in
  • Primaloft Eco insulation traps in warmth and is sourced from recycled materials
  • Core Comfort Technology bonds insulation to strategic points for increased comfort, an enhanced range of motion, and a sleek overall appearance
  • Fusionic Tech uses a stitchless, heat-bonding technique to join fabric pieces, which results in stronger, cleaner-looking seams
  • Underarm vents lend airflow and increase evaporation when you work up a sweat

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Sierra Designs Prima Fusion Insulated Jacket - Men's

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Here's what others have to say...

5 5

Great Shell

This is my favorite jacket with just a little insulation in the chest and back . zip pits is the jacket to go for climbing mountain biking in winter etc cant beat the price for such a nice looking and functional Jacket.

is the hood helmet compatable and...

is the hood helmet compatable and adjustable?

Responded on

The hood is helmet compatible, and I believe that it does have adjusters on the inside of the hood, and on the back, though I'm not 100% on that. It would be very surprising if SD didn't put them in there though, they're kinda important.