The Supply Index is a design-led record of everyday products, selected for the quality of their design decisions — what each prioritises, what it sacrifices, and what those choices say about who it was made for.

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Summit Breithorn Hoodie Jacket

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The Summit Breithorn is The North Face's alpine down hoodie, built as a mid-layer for climbing and mountaineering and insulated with 800-fill ProDown, a hydrophobic-treated goose down that dries faster and holds loft better when damp than untreated down. Current versions are a hybrid: down through the body, with ThermoBall Eco synthetic fill at the shoulders, cuffs and collar, where compression and moisture would otherwise flatten down. A recycled Pertex shell with a non-PFC finish keeps weight low, a slim articulated cut lets it sit under a hardshell without bunching, and a helmet-compatible hood and stretch cuffs handle the alpine details. It packs into its own pocket at around 440 grams, and belongs in the Summit performance line rather than on the high street.

Design intent

  • Pairing 800-fill hydrophobic down with synthetic ThermoBall at the shoulders, cuffs and collar puts each insulation where it works best: down for warmth, synthetic where sweat and pack straps would collapse down.
  • A slim, articulated cut lets the jacket layer under a shell without creating pressure points or compressing its own loft, which is what a mid-layer has to do.

Trade-offs

  • The Pertex shell is weather-resistant, not waterproof; in serious wet it is meant to sit under a hardshell rather than stand alone.
  • At this specification and price it is built for the mountains; as a city winter jacket it is over-specified, and the technical details earn nothing in that setting.
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24 Feb 2025
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