Rab
Men's Downpour Mountain Waterproof Jacket
Sold on Rab's UK store at our last check.
Verdict
Rab's Downpour-family rain shell with a mountain feature set: peaked adjustable hood, pack- and harness-accessible pockets and underarm vents, on a 40D 2.5-layer Pertex Shield fabric.
Research status: Research-based assessment
Best for
- Mountain hikes and scrambles
- Hiking with a pack or harness
Not ideal for
- Users who need a published helmet-compatible hood
Price and availability
- £160 GBP · UK · manufacturer price last checked
Prices change. We record the manufacturer's recommended price with the region and the date checked, and we do not present a promotion as a permanent price.
ⓘ What the specification labels mean
Manufacturer published: printed by the brand on an official page or document. Independently measured: reported by a named third party. WaterproofJacket.com physically tested: measured by us from a real test record. Not published: we checked the brand's documentation and it does not publish this figure. Not researched yet: we have not checked this field yet. Not independently verified: we have seen the value but not yet confirmed it against a dated primary source.
Construction and waterproofing
- Layer construction
- 2.5L
- Membrane or coating
- Pertex Shield, 2.5-layer construction
- Membrane generation
- Not independently verified
- Face fabric
- 40D Pertex Shield ripstop
- Face-fabric denier
- 40D
- Backer or lining
- Not researched yet
- Seam sealing
- Not researched yet
- DWR treatment
- Fluorocarbon-free DWR
- Manufacturer PFAS wording
- Rab's Material Facts table lists "No" in its PFAS column for every component; Rab defines that as "phased out all intentionally added PFAS from the corresponding component".
- Recycled content
- 45% of total weight recycled (face fabric 100%, membrane 0%, backer 0%, zips 4%)
- Country of manufacture
- Not researched yet
Manufacturer published
Manufacturer published · checked October 15, 2026 · source
Not independently verified
Manufacturer published · checked October 15, 2026 · source
Manufacturer published · checked October 15, 2026 · source
Not researched yet
Not researched yet
Manufacturer published · checked October 15, 2026 · source
Manufacturer published · checked October 15, 2026 · source
This is Rab's own component-level statement, not an independent test or a third-party PFAS-free certification of the whole product.
Manufacturer published · checked October 15, 2026 · source
Not researched yet
Performance figures
- Waterproof rating
- 20,000 mm hydrostatic head
- Waterproof test method
- Not published by the manufacturer
- Breathability rating
- 20,000 g/m²/24 hrs (MVTR)
- Breathability test method
- Not published by the manufacturer
- RET
- Not researched yet
- MVTR
- 20,000 g/m²/24 hrs
- Air permeability
- Not researched yet
- Windproof claim
- Not researched yet
- Our own measurement
- Not applicable
- Third-party measurement
- Not independently verified
Manufacturer published · checked October 15, 2026 · source
Manufacturer-published figure. Rab does not name the test method, so it cannot be compared directly with other brands' figures.
Not published by the manufacturer
Rab names no test standard, pressure rate or water temperature.
Manufacturer published · checked October 15, 2026 · source
Manufacturer-published figure. Rab does not name the MVTR test method; MVTR results from different methods are not comparable.
Not published by the manufacturer
Rab names no MVTR test standard, so the figure cannot be compared with other brands' MVTR.
Not researched yet
Manufacturer published · checked October 15, 2026 · source
Manufacturer-published; test method not specified by Rab.
Not researched yet
Not researched yet
Not applicable
We have not physically tested this jacket.
Not independently verified
Hydrostatic head, MVTR, RET and air permeability come from different laboratory methods. We never convert one into another and never present a manufacturer's laboratory figure as our own measurement.
Weight and packability
- Published weight
- 352.5 g (12.4 oz)
- Version measured
- Size M
- Sample size
- Not researched yet
- Independently measured weight
- Not independently verified
- Packed dimensions
- Not researched yet
- Self-stowing
- Not researched yet
- Stuff sack
- Not researched yet
Manufacturer published · checked October 15, 2026 · source
Manufacturer published · checked October 15, 2026 · source
Not researched yet
Not independently verified
Not researched yet
Not researched yet
Not researched yet
Hood, ventilation and features
- Hood
- Adjustable hood with a robust peak
- Hood adjustment
- Adjustable, with peak
- Helmet compatible
- Not published by the manufacturer
- Main zipper
- YKK AquaGuard centre front zip with chin guard
- Two-way front zip
- Not researched yet
- Storm flap
- Not researched yet
- Pit zips
- Yes — underarm vents
- Other ventilation
- Not researched yet
- External pockets
- Two A-line pockets
- Internal pockets
- Not researched yet
- Cuffs
- Extended, adjustable cuffs
- Hem
- Dual-sided rear hem adjustment, single-handed
- RECCO reflector
- Not researched yet
- Snow skirt
- Not researched yet
Manufacturer published · checked October 15, 2026 · source
Manufacturer published · checked October 15, 2026 · source
Not published by the manufacturer
Rab's page does not say whether the hood fits over a helmet.
Manufacturer published · checked October 15, 2026 · source
Not researched yet
Not researched yet
Manufacturer published · checked October 15, 2026 · source
Not researched yet
Manufacturer published · checked October 15, 2026 · source
Not researched yet
Manufacturer published · checked October 15, 2026 · source
Manufacturer published · checked October 15, 2026 · source
Not researched yet
Not researched yet
Fit and layering
- Manufacturer fit
- Regular
- Our fit assessment
- Not independently verified
- Layering capacity
- Not researched yet
- Hem length
- Centre back length 78 cm / 30.7 in (size M)
- Sizes
- XXS–3XL per Rab's published size chart
- Size notes
- Not researched yet
Manufacturer published · checked October 15, 2026 · source
Not independently verified
We have not handled this jacket, so we publish no fit assessment.
Not researched yet
Manufacturer published · checked October 15, 2026 · source
Manufacturer published · checked October 15, 2026 · source
Not researched yet
Ownership, care and repair
- Warranty
- Not researched yet
- Repair programme
- Not researched yet
- Spare parts
- Not researched yet
- Washing instructions
- Not researched yet
- Reproofing guidance
- Not researched yet
- End-of-life programme
- Not researched yet
- Availability
- Listed on Rab's UK store
- Colours
- Not researched yet
Not researched yet
Not researched yet
Not researched yet
Not researched yet
Not researched yet
Not researched yet
Manufacturer published · checked October 15, 2026 · source
Not researched yet
Strengths
- Numeric hydrostatic head and MVTR published (20,000 mm / 20,000 g/m²/24 hrs), unlike most jackets in this database
- Underarm vents and pack- and harness-accessible pockets
- Weight published with the sample size (352.5 g, size M)
Limitations
- No test standard named for either figure, so they cannot be compared with other brands' numbers
- 2.5-layer construction: a printed inner layer rather than a laminated backer
- Helmet compatibility not stated
- Only the UK store was checked; other regions and prices are not recorded
Jackets with something in common
Grouped by a shared, documented property. Not a ranking.
- Patagonia Torrentshell 3L Rain Jacket · Same primary use (Hiking)
- Arc'teryx Beta Jacket · Same primary use (Hiking)
Alternatives in the database
Sources
- officialRab UK — Men's Downpour Mountain Waterproof Jacketchecked
Specification correction history
No corrections recorded for this record.
Status: Current · Written by WaterproofJacket.com editorial desk
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