Cetus Lite Petrichor Jacket

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UOG TOP PICK:  The Montane Cetus Lite Petrichor Jacket delivers eco-friendly waterproofing, exceptional breathability, and lightweight comfort, making it a reliable choice for wet, a top pick for unpredictable adventures.

Montane says: 

Built for packable high-performance protection, the Cetus Lite blends essential features with the lightweight extremely breathable fabric to offer unrivalled comfort during high energy outdoor pursuits.

RESPONSIBLE PERFORMANCE – Using our Petrichor waterproof technology, this high-performance fabric is PFC/PFAS chemical-free
DEMANDING COMFORT – Exceptionally breathable (RET <6) performance ensures excellent moisture management during demanding activities
EFFICIENT PERFORMANCE – Essential features are critically engineered for maximum performance and minimal weight

Our Verdict

The Montane Cetus Lite Petrichor Jacket balances eco-conscious design and high-performance protection; it features Montane’s unique PETRICHOR technology,  a 3-layer system combining a non-porous, hydrophilic membrane, recycled nylon ripstop outer, and durable tricot inner. The fabric effectively wicks away moisture, maintaining breathability even during strenuous activity, which is particularly impressive given the absence of pit zips; with a 20,000mm hydrostatic head and RET <5 breathability,  the Cetus Lite is exceptionally suited to long, wet days in unpredictable conditions.

Notably, the Petrichor fabric is soft and pliable, lacking the noisy, crinkly feel typical of waterproof shells, making it exceptionally comfortable. The lightweight design (weighing approximately 309g for a medium) means it packs down easily, an ideal choice for unpredictable British weather. The durable water repellent (DWR) treatment, free from harmful PFAS and fluorocarbons, requires regular upkeep, especially under heavy use, to maintain water-beading quality. Routine washes and reproofing with technical products ensure optimal performance, helping the jacket resist wetting out during prolonged exposure.

The Cetus Lite’s fit is functional yet spacious enough to allow layering, and the extended back and articulated sleeves enhance comfort during hikes. The fully adjustable hood provides excellent protection without hindering peripheral vision, while the Aquaguard zips on the main zip and hand pockets add to its overall waterproof integrity. Although the hand pocket placement may be slightly inconvenient when wearing a backpack with a waist belt, this is a minor trade-off considering the jacket’s overall design and utility.

– Reviewed by Ultralight Outdoor Gear

In-depth Reviews:

• Montane Cetus Lite Jacket Review – “My go-to jacket for the last 5 months (May to September)”
• Montane Cetus Lite Jacket Review – “The Cetus Lite jacket has become a firm favourite, and I will grab it off the coat hooks on a regular basis.”

Features

• Offset seam intersections improve construction, durability and comfort
• Laminated peak, hems and cuff tabs reduce seams, weight and improve durability
• Fully adjustable hood offers precision full adjustment and unhindered vision
• Articulated sleeves with grown on hook and loop adjustment
• Fully adjustable hem
• YKK Aquaguard centre front zip and hand pockets
• Regular fit

Specifications

• Small weighs: 299g
• Medium weighs: 309g
• Large weighs: 318g
• XLarge weighs: 329g

Material & Construction

• Petrichor 3L 100% Nylon (recycled) 21D Ripstop offers excellent wet weather protection (20k Hydrostatic Head) and exceptional breathability (RET <6)

Help & advice:

• Time-Saver Guide to Choosing a Waterproof Jacket
• Time-Saver Guide to PFC Free
• Montane Petrichor Technology Explained
• About Montane
• Recycled Content in Outdoor Gear
• Why is ‘PFC Free’ Important?
• Choosing a Shell Jacket
• MVTR and Breathability Explained
• What is Hydrostatic Head?