Firewall Alpine 3L Jacket

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An efficient alpine shell with just the right balance of weight, function and weather protection.

Rab says: 

From alpine linkups to exposed ridges, this exceptionally packable waterproof jacket is made for your tough ascents in fickle conditions. All its features have been designed to reduce bulk and weight so it’s easy to stash when clouds clear, and with 3-layer Pertex® Shield, it offers uncompromised protection when a storm strikes mid-climb. With ascent-specific articulation it’s the ideal retreat for alpine climbing, yet it also offers enduring comfort on any technical mountain pursuit in unpredictable weather, whether you’re fast hiking or negotiating knife-edge ridgelines.

Our Verdict

The Firewall Alpine 3L Jacket is a refined shell that balances mobility and protection, coming in at 334g (Medium), it feels well-tuned for fast, technical objectives. The updated Pertex Shield fabric keeps it light and compact without sacrificing waterproof performance, while still offering solid breathability. The regular fit works well over bulkier “puffy” layers, and the articulated cut moves naturally through scrambles or steep climbs.The hood is easy to adjust, featuring a stiffened peak that maintains its shape in the wind. Details like the clean cuff design and single-pull hem cinch keep the jacket fuss-free.

– Reviewed by Ultralight Outdoor Gear

Features

• Semi-elasticated hood with stiffened peak and rear volume adjustment for enhanced fit
• YKK® AquaGuard® centre front zip with chin guard for comfort
• YKK® zipped chest pocket doubles as integrated stuff sack
• Semi-elasticated extended cuffs for comfort
• Single side rear hem adjustment with anti snag tether
• Reflective Rab logo and rear print

Specifications

• Small weighs: 326g
• Medium weighs: 334g
• Large weighs: 339g
• XLarge weighs: 357g
• Centre back length (Size M): 77.5 cm / 30.5 in
• Fit: Regular

Material & Construction

• 20D Pertex® Shield 2.5-Layer construction waterproof technology with fluorocarbon-free DWR (85gsm) HH: 20,000mm/MVTR: 20,000 g/m2/24hrs
• 55% Polyamide, 45% Polyamide (Recycled) with Polyurethane membrane

Help & advice:

• Time-Saver Guide to Choosing a Waterproof Jacket
• Time-Saver Guide to PFC Free
• About Rab
• Choosing a Waterproof Jacket
• MVTR Breathability
• Hydrostatic Head
• Recycled Content in Outdoor Gear
• Rab Sustainability and Responsibility