Borealis Jacket

The Rab Borealis Jacket consistently earns its stripes as a go-to piece for active mountain pursuits. Built from Matrix single-weave stretch softshell, it's a fabric Rab uses frequently, and for good reason: it strikes a balance between wind resistance and breathability. It's not a fully waterproof layer, nor does it pretend to be, but it handles light wind and drizzle well enough to keep you comfortable during high-output activities like scrambling, fast-hiking, or trail running in cooler conditions. The DWR finish provides a respectable first line of defense against light moisture, but don't expect it to shed a downpour.

What sets the Borealis apart is its exceptional breathability and freedom of movement. The Matrix fabric stretches four ways, allowing for unhindered motion whether you're reaching for a hold or swinging an ice axe. The slim, athletic fit layers well over a baselayer without feeling restrictive, and the articulated sleeves prevent cuff creep. At under 300g, it's light enough to forget it's in your pack until you need it, and it compresses down to a minimal size, making it a no-brainer for shoulder-season excursions when weather can be unpredictable.

Durability for such a lightweight piece is surprisingly good. While it's not a bombproof hardshell, the tightly woven face fabric stands up to general abrasion against rock and pack straps better than many lighter wind shirts. For its price point, the Borealis offers a compelling blend of protection, breathability, and packability. It sits comfortably in the market as a versatile, active softshell that excels when you're moving fast in variable, non-monsoon conditions, slotting in perfectly as a primary outer layer or a highly functional mid-layer.