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Why we build with weather in mind
Field notes

Why we build with weather in mind

Designing clothing for unpredictable daily conditions.
Marek Holt, Head of Product · 24 April 2026 · 7 min read
Weather in a city is not the weather in a forecast. It is a set of micro-events: the wind that funnels down one particular street, the ten minutes of rain between a station and an office, the sudden warmth of a train carriage after a cold platform. Outdoor clothing is designed for sustained exposure. Urban clothing has to handle interruption.

Weather in a city is not the weather in a forecast. It is a set of micro-events: the wind that funnels down one particular street, the ten minutes of rain between a station and an office, the sudden warmth of a train carriage after a cold platform. Outdoor clothing is designed for sustained exposure. Urban clothing has to handle interruption.

Weather in a city is not the weather in a forecast. It is a set of micro-events: the wind that funnels down one particular street, the ten minutes of rain between a station and an office, the sudden warmth of a train carriage after a cold platform. Outdoor clothing is designed for sustained exposure. Urban clothing has to handle interruption.
The problem with sustained-exposure design

The problem with sustained-exposure design

The problem with sustained-exposure design
A mountain shell is built on an assumption: you will be outside for hours, moving hard, and the jacket will stay on. Everything follows from that. The fit is generous enough for layers, the fabric can be stiff because you are not sitting in it, and the noise it makes does not matter because nobody is nearby.

A mountain shell is built on an assumption: you will be outside for hours, moving hard, and the jacket will stay on. Everything follows from that. The fit is generous enough for layers, the fabric can be stiff because you are not sitting in it, and the noise it makes does not matter because nobody is nearby.

A mountain shell is built on an assumption: you will be outside for hours, moving hard, and the jacket will stay on. Everything follows from that. The fit is generous enough for layers, the fabric can be stiff because you are not sitting in it, and the noise it makes does not matter because nobody is nearby.
Almost none of those assumptions hold on a Tuesday morning. You are outside for eleven minutes. You will take the jacket off and carry it. You will sit down in it. You will be standing eighteen inches from another person in a lift. The design constraints invert.

Almost none of those assumptions hold on a Tuesday morning. You are outside for eleven minutes. You will take the jacket off and carry it. You will sit down in it. You will be standing eighteen inches from another person in a lift. The design constraints invert.

Almost none of those assumptions hold on a Tuesday morning. You are outside for eleven minutes. You will take the jacket off and carry it. You will sit down in it. You will be standing eighteen inches from another person in a lift. The design constraints invert.

Beading behaviour after forty accelerated wash cycles.
What we test instead

What we test instead

What we test instead

  • Packability: can it be carried for six hours without becoming a burden?
  • Acoustic behaviour: does the fabric announce itself when you move?
  • Seated comfort: does the hem ride, does the collar push, does the lining stick?
  • Recovery: does it look acceptable after being crushed in a bag?
A jacket that performs perfectly and gets left at home has a real-world waterproof rating of zero.

A jacket that performs perfectly and gets left at home has a real-world waterproof rating of zero.

A jacket that performs perfectly and gets left at home has a real-world waterproof rating of zero.
From an internal design review, 2025
This is why the Transit Shell has a hood that rolls into the collar rather than detaching. A detachable hood is more versatile on paper and worse in practice, because the detached hood ends up in a drawer and is never with you on the day you need it. The design has to survive contact with how people actually behave.

This is why the Transit Shell has a hood that rolls into the collar rather than detaching. A detachable hood is more versatile on paper and worse in practice, because the detached hood ends up in a drawer and is never with you on the day you need it. The design has to survive contact with how people actually behave.

This is why the Transit Shell has a hood that rolls into the collar rather than detaching. A detachable hood is more versatile on paper and worse in practice, because the detached hood ends up in a drawer and is never with you on the day you need it. The design has to survive contact with how people actually behave.
We keep a log of weather complaints from our own team and from store staff. It is the least scientific input we have and one of the most useful. Almost every meaningful revision to our outerwear over three years has started as a sentence someone wrote down while annoyed.

We keep a log of weather complaints from our own team and from store staff. It is the least scientific input we have and one of the most useful. Almost every meaningful revision to our outerwear over three years has started as a sentence someone wrote down while annoyed.

We keep a log of weather complaints from our own team and from store staff. It is the least scientific input we have and one of the most useful. Almost every meaningful revision to our outerwear over three years has started as a sentence someone wrote down while annoyed.
Written by
Marek Holt
Head of Product, NORTHFORM
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