Insulated Jackets

Synthetic insulated jackets.

Synthetic insulation is made from fine polyester fibres that trap air in a similar way to down. It is heavier for the same warmth, but it keeps insulating when damp and dries quickly, which suits wet, cold mountain weather and long days where nothing fully dries.

• Floyen: midweight synthetic. PrimaLoft® Classic body-mapped insulation in a ripstop nylon outer woven with Bureo® NetPlus® 100% recycled net, finished with a PFC-free DWR. Updated with higher loft and improved packability, plus an over-helmet hood with a rear cinch, fleece-lined hand pockets and anti-snag hem cords. For year-round cold and mixed conditions.
• Ravn: severe weather synthetic. Our warmest synthetic layer. 160gsm core insulation, with 100gsm mapped to the sleeves and hood, inside a 100% recycled OceanCycle Pertex® Quantum ripstop shell. An extended cut, glove-compatible adjusters, a two-way moulded zip with an insulated rear baffle, two chest pockets and two internal dump pockets. Built to combine weather resistance with dependable warmth.

Down jackets.

Our down jackets use hydrophobic goose down from 650 to 850 fill power, with synthetic fill at the cuffs, collar and shoulders where down compresses and moisture builds. The range runs from the lightweight Varmr and the 247g Asta gilet to the box-wall Fjorm, our warmest jacket. See the full range in down jackets, or read The Complete Guide to Down Insulation.

Active insulation and fleece.

For high-output days, Asger pairs a Polartec® Alpha™ lining with a windproof, recycled outer, and regulates temperature as your effort rises and falls. Our Eldar and Njorunn fleeces add breathable warmth under a shell. See fleece & mid layer jackets.

Down or synthetic insulation?

Choose down for the most warmth for the least weight and pack space, and when conditions are cold and mostly dry. Choose synthetic when you expect sustained wet, or want a jacket you can wear hard without worrying about it. Hydrophobic down narrows the gap but doesn't close it. Read Down vs Synthetic Insulation: The Honest Guide.

What is a “synthetic down” jacket?

It is a jacket filled with man-made polyester fibres engineered to copy the loft and air-trapping structure of down. It contains no goose or duck down and no feathers. We don’t use synthetic down. We prefer the proven performance of each insulation in its own right: real goose down for warmth-to-weight, and synthetic insulation built for warmth in the wet. Floyen and Ravn are our synthetic insulated jackets.

Is a puffer jacket the same as an insulated jacket?

"Puffer" describes the look: baffles of insulation stitched into the jacket. Most puffer jackets are insulated with down or synthetic fill. What matters is the type and amount of insulation, the outer fabric and the fit, not the name. “Puffer” is simply a common term for a baffled jacket, but is often used synonymously with “down jacket”.

What is Jöttnar’s warmest insulated jacket?

For cold, wet and windy conditions, choose the Ravn, our warmest synthetic layer.

Do I need a lightweight insulated jacket or a warm one?

A light insulated jacket you keep on the move, such as Asger or Varmr, suits active days. A warmer jacket worn over everything at stops suits belays, summits and winter camps. Many mountain days need both. Read the Mountain Layering Guide.