Rab Nebula Pro Insulated Jacket

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With dependable warmth and rugged construction, the Rab Nebula Pro is a go-to insulated layer for serious winter explorers.

Rab says: 

If you need hardworking synthetic insulation that you can stuff in a pack and wear anywhere, the Nebula Pro is built to hold its own. Powered by new, high-lofting, synthetic PrimaLoft® Silver RISE insulation, it delivers instant warmth and burly protection, with greater resilience in cold, damp conditions. Offering mountain utility and climb-specific features, it’s geared up for winter hikes, mountaineering, and bitter belay ledges.

Our Verdict

The Rab Nebula Pro Insulated Jacket is durable for demanding winter pursuits, mountaineering and winter hikes. Using PrimaLoft® Silver RISE insulation, the coat offers impressive warmth with synthetic fibres that mimic down’s loftiness, creating excellent heat retention even in damp conditions. The robust construction and warmth-to-weight ratio make it a reliable choice for those needing dependable insulation in unpredictable weather.

The jacket’s 30D Recycled Pertex® Quantum Pro outer fabric, treated with a fluorocarbon-free DWR, provides solid water resistance, ideal for snow-laden trails and misty climbs. The helmet-compatible hood with volume adjustment and a stiffened peak enhance coverage on blustery days, while the fleece-lined chin guard and insulated zip baffle help lock in warmth. Practical details like the dual-sided hem adjustment and elasticated cuffs allow for easy use with gloves, keeping warmth in and cold out.

The thoughtful pocket layout includes two concealed hand pockets, an inner security chest pocket, and an integrated stuff pocket with a harness attachment loop. While the jacket may feel bulkier on fast-paced routes, it performs excellently in cold, damp settings where warmth and resilience are top priorities.

– Reviewed by Ultralight Outdoor Gear

Features

• Blown synthetic insulation lofts to trap air and provide warmth
• Helmet compatible hood with rear volume and concealed
• internal face adjustment with stiffened peak for increased protection
• 2-way YKK® VISLON® centre front zip with insulated zip baffle and fleece lined chin guard
• 2 YKK® concealed zipped hand pockets
• Integrated storage pocket with harness attachment loop
• YKK® zipped inner security chest pocket
• Elasticated cuff for optimum fit and hook and loop closure for use with gloves
• Dual sided mitt friendly rear hem adjustment
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Specifications

• Small weighs: 581g
• Medium weighs: 601g
• Large weighs: 638g
• XLarge weighs: 671g
• Fit: Regular
• Centre back length (Size M): 76.5cm / 30.1inch

Material & Construction

• PrimaLoft® Silver RISE 100% recycled synthetic insulation (279g/9.8oz, Size M)
• 30D Recycled Pertex® Quantum Pro outer (52gsm) with fluorocarbon free DWR
• 20D Recycled Pertex® Quantum lining (38gsm) with fluorocarbon free DWR

Help & advice:

• Time-Saver Guide to Choosing a Synthetic Jacket
• Synthetic Insulation Explained
• Rab PrimaLoft Technology Explained
• About Rab
• Rab Sustainability and Responsibility
• Recycled Content in Outdoor Gear
• PERTEX Fabrics Overview
• What is PERTEX Quantum?