
The mid-layer you wear every single evening
Rab Cirrus Insulated Jacket
PrimaLoft synthetic, packs to a water bottle
Synthetic keeps insulating when it gets damp, which in a Himalayan spring matters more than the extra warmth-per-gram of down — it is noticeably less warm than a down jacket of the same weight, and that is the deal.
Still warm when damp — the whole case against down in wet seasons
Packs small enough to live in a daypack all day
Face fabric survives a rock scramble
Less warm than equivalent-weight down
Not enough on its own above 4,500 m
Not windproof
Not for you if: Sub-zero evenings at 5,000 m as your only warm layer. This is the mid-layer under a down jacket, not a replacement for one.
Check price on Amazon














