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What for?
Everyday
For slow outings, a collar, useful pockets and closing cuffs can matter more than minimum packed size. Try it over a jumper.
- Room at upper arms
- Neck coverage
- Accessible pockets
Hiking
A more air-permeable construction helps during sustained activity. Add your warm layer during breaks before you become chilled.
- Air exchange
- Front zip for ventilation
- Room beneath a shell
Active climbs
Light active insulation can suit continuous movement better than a thick belay-style jacket. Wind protection and warmth vary between models.
- Free arm movement
- Low bulk
- Breathable construction
Rest stops
For longer stops, consider filling, hem, collar and hood together. These features do not establish a universal temperature limit.
- Closing hem
- Hood if needed
- Space for layers
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Guide
Insulation
Choose synthetic insulation by pace: air-permeable designs suit movement, while a closed outer face limits draughts. Decide whether the jacket will sit beneath or over your shell.
Key points
- Prioritise airflow on climbs and extra insulation for breaks.
- Consider the filling and outer fabric together.
- Reach forwards to check shoulder room and sleeve length.
Buying advice
Which insulated jacket suits you?
Five questions on use, movement or breaks, fit, fill and budget help you choose. You can select synthetic insulation.
- Compare by use
- Check fit and features
Which choice for which use?
| Use | Your choice | Consider |
|---|---|---|
| Brisk climbs | Your choiceMore air-permeable insulation | ConsiderMay need extra wind protection |
| Cool walks | Your choiceModerate insulation | ConsiderTry beneath your waterproof |
| Long stops | Your choiceMore insulation and closing openings | ConsiderRelease heat early when moving again |
What to look for
| Question | In brief | Why |
|---|---|---|
| When will you wear it? | In briefMoving or resting | WhyThick insulation can be too warm during hard effort even in cold weather. |
| Where is the insulation? | In briefCompare construction | WhyHybrid designs may insulate the torso and sleeves differently. |
| Over or under your shell? | In briefTry the combination | WhyThe necessary fit depends on the order of your clothing layers. |
Frequently asked questions
Is synthetic insulation waterproof?
No. The filling and the rain protection of the outer fabric are separate properties. Sustained rain needs an explicitly waterproof construction or an additional shell.
Can I wear it uphill?
If its warmth and airflow suit your pace. Start with less insulation and use the front zip rather than soaking the inside with sweat.
Is the lightest jacket the warmest?
Weight alone does not describe fill quantity, cut or wind protection. Compare intended use and construction instead of sorting unrelated models only by grams.
How do I care for the filling?
Wash and dry according to the care label. Store it dry and avoid leaving it tightly compressed unnecessarily; a small stuff sack is mainly for transport.
How much does an example weigh?
For example, Salewa lists Salewa Ortles Hybrid TirolWool® Air Jacket M at 330 g. Compare weight figures only when their reference sizes match.
How do I check the fit?
Check shoulder width and sleeve length before the room at your waist and hem. Reach forwards as if holding walking poles, then sit down. Sizing up does not reliably fix a short back length; compare cuts when needed.
Last updated: October 2026