The cold test.
We're designing for a full round, and we'll publish the numbers before the first batch ships. Here's the plan, in full. It isn't complicated. It mostly involves sitting in a very hot room with a thermometer.
Freeze a pack.
Overnight, in a normal freezer.
Tape on a thermometer.
On the side of the pack that faces you. Then wear it where it goes.
Go and sit.
Every 3 minutes, write down the temperature and how cold it feels from 1 to 5. Stop at 20 minutes, or sooner if you feel like it.
Publish it.
Every session goes on this page, including any that make us look silly.
Four setups, one chart.
We'll run a bare pack, a pack in felt, a pack with felt and film, and a warmer pack. The numbers land here.
| Setup | Room | Result |
|---|---|---|
| Bare packNo pocket, no insulation. The baseline. | — | Awaiting data. |
| Pack in feltWool felt on the room side. | — | Awaiting data. |
| Felt and filmWool felt and reflective film on the room side. The Heat Break pocket. | — | Awaiting data. |
| Warmer packA warmer pack, same insulation, to compare. | — | Awaiting data. |
Get the numbers by email
Done. You'll get the numbers when they're published, whatever they say.
Cold test numbers and launch news from Granq Works. Unsubscribe any time. Privacy.
While we're in there.
- Does it read as shorts from three feet? We'll post the photo.
- How cold is the side facing you, right from the start?
- How frozen is a pack after 90 minutes in a gym bag?
- What happens when linen gets properly sweaty?
- Does the pack stay sealed in a hot room?
- Do all four sizes fit like the size guide says?
We can't tell you it helps. We can tell you it's cold.
This measures the pack, not you. It's a test of shorts.
Reserve a pair