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The longer you stand rather than walk, the more down you need, ideally with a hood. Open the advisor ›

Stories

Stories: Down Jackets

Guide

Down Jackets

Compare fill weight before fill power. In wet weather, down needs a waterproof layer on top.

Key points

  • Mountain Equipment's guide: under 150 g of down is light; 200–250 g adds warmth.
  • Fill power alone cannot rate the whole jacket: compare fill weight too.
  • For long stops, a hood and hip coverage matter more than saving a few grams.
  • Wet down loses loft: plan protection against rain and wet snow.
White down and feathers against a dark background.

Buying advice

Which down jacket suits you?

Five questions on use, movement, fit, fill and budget. Compare down and synthetic insulation.

  • Down or synthetic

Open the down jacket advisor ›

Which down jacket for which use?

UseWhat to expectYour choice
Walking breaksWhat to expectShort stops, limited pack spaceYour choiceLight down jacket
Winter stopsWhat to expectLong periods standing in frostYour choiceWarm hooded jacket
Town and platformsWhat to expectWind around hips and thighsYour choiceLong parka
Cold, wet daysWhat to expectMoisture from outsideYour choiceWaterproof down construction
White down and feathers against a dark background.
90/10 gives the weight proportions of down and feathers.
Woman and man wearing quilted jackets outside a cabin.
Try the jacket over the layers you will wear underneath.

Types compared

  • Lightweight down jacket

    Rab Microlight Jacket

    Rab quotes 134 g of down for the Microlight Jacket in UK size L.

    • Advantage: Packs small for summit breaks
    • Drawback: Too thin for standing about in frost
  • Mid-weight down jacket

    Rab Electron Pro Hoody

    Rab lists a helmet-compatible hood for the Electron Pro Hoody.

    • Advantage: More warmth for short stops
    • Drawback: Soon too warm on the move
  • Down parka or coat

    The North Face Arctic Parka

    The North Face lists down fill and an adjustable hood.

    • Advantage: Keeps hips and thighs warm too
    • Drawback: Bulky in a rucksack
  • Waterproof down jacket

    Rab Valiance Parka Wmns

    Rab lists Pertex Shield and sealed seams for the Valiance Parka.

    • Advantage: Keeps out rain and slush
    • Drawback: Heavier than jackets without a membrane

What to check before you buy

QuestionIn shortWhy
What does fill power describe?In shortDown loftWhyHigher fill power saves weight for a given warmth. Without fill weight, it cannot promise jacket warmth.
Where does heat escape?In shortThrough stitched seamsWhyBox-wall baffles separate inner and outer fabric with walls. They add weight but reduce direct stitching lines.
What does treated down do?In shortKeeps loft for longerWhyRab says water-repellent down withstands moisture for longer. This does not make the jacket rainproof.

Frequently asked questions

Is there a fixed temperature rating?

No standardised rating exists. Wind, movement and personal sensitivity determine the warmth needed.

Under or over the waterproof?

Thin jackets fit underneath; thick stop layers go over the top. Down soon becomes too warm uphill.

How should I dry the fill?

Follow the label and dry completely. Never store damp down; gently loosen clumps.

What does RDS tell me?

RDS bans live-plucking and force-feeding and traces the supply chain. An animal-origin label alone does not prove this.

Last updated: October 2026

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