Verdict
Head-to-head · Best Rain Jackets

Black Diamond Highline Stretch Shell vs Rab Downpour

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

Black Diamond Highline Stretch Shell comes out ahead by a narrow margin (4.3 vs 4.1). Black Diamond Highline Stretch Shell is best for: Climbers who prioritize durable, flexible protection in cold conditions. Read the strengths below before deciding.

Black Diamond Highline Stretch Shell
Higher ratedRanked #3 in Best Rain Jackets
Black Diamond Highline Stretch Shell
2 sources$529as of Oct 10

The Black Diamond Highline Stretch Shell delivers impervious protection against heavy rain and wind through its 3-layer BD.dry construction and fully taped seams, as bettertrail found it performed flawlessly in torrential downpours. Its 40-denier face fabric offers above-average durability for a stretch shell, while the GTT Breathable Waterproof Protection permanently fuses the DWR finish to eliminate re-treatment needs, a benefit thegreatoutdoorsmag confirmed after months of exposure. However, the jacket is priced significantly higher than competitors and features an oversized, boxy fit that feels bulky and overkill for mild weather above the mid-60s Fahrenheit. It fits alpinists and climbers who prioritize durable, stretchy protection in cold conditions but should be avoided by hikers seeking a slimmer profile or those active in warmer temperatures.

Strengths
  • — 3-layer BD.dry construction provides impervious protection against heavy rain and wind, with fully taped seams ensuring no moisture penetration.
  • — GTT Breathable Waterproof Protection permanently fuses the DWR finish into the fabric fibers, eliminating the need for periodic re-treatment and maintaining long-lasting water repellency.
  • — Stretchy jersey-backed interior provides a soft, quiet feel against the skin and allows full range of motion without the crinkling sound of traditional hardshells.
Watch-outs
  • — Oversized, boxy fit and long hem can feel bulky and overkill for mild weather above the mid-60s Fahrenheit.
Rab Downpour
Ranked #4 in Best Rain Jackets
Rab Downpour
2 sources$91.38as of Oct 11

The Rab Downpour utilizes Pertex Shield fabric to deliver a soft, quiet feel that reviewers praise as significantly more comfortable than typical crinkly ultralight shells. OutdoorGearLab found the adjustable hood with its stiffened peak provides excellent storm sealing and visibility, while GearJunkie noted the generous pit zips allow for rapid heat dumping during high-output activities. However, the standard model weighs 13.3 ounces, which is heavy for its class, and long-term users report that the Durable Water Repellent finish degrades quickly and is difficult to restore. The jacket also suffers from minor fabric bunching around the stomach when moving or reaching overhead. This shell fits hikers who prioritize comfort and ventilation over minimal weight, but those seeking ultralight packability should look elsewhere.

Strengths
  • — Pertex Shield fabric provides a soft, quiet feel against the skin rather than crinkly plastic.
  • — Hood design features one-handed adjustment and a stiffened peak for effective storm sealing.
  • — Pit zips allow rapid heat dumping during high-output activities.
Watch-outs
  • — The standard Downpour model weighs 13.3 oz, which reviewers describe as heavy for its class.
  • — Fabric tends to bunch around the stomach area when moving or reaching overhead.
  • — Durable Water Repellent (DWR) finish degrades quickly and is difficult to restore.

How they stack up

Black Diamond Highline Stretch Shell

It provides a stretchy fit for climbing motion, unlike the stiff, crinkly construction of the Rab Downpour or the rigid feel of the Outdoor Research Foray 3L.

Rab Downpour

The Rab Downpour has underarm vents for dumping heat, where the Patagonia Boulder Fork has no ventilation zips. At 13.3 oz it is heavier than the 12 oz Arc'teryx Beta SL and lighter than the 15.3 oz Outdoor Research Foray 3L. It costs less than both of those jackets.

Specs side-by-side

SpecBlack Diamond Highline Stretch ShellRab Downpour
Material40D nylon2.5-layer Pertex Shield
Weight12.7 oz (Men's M)13.3 oz
VentilationPit zipsunderarm vents
Fabric Layers3-layer2.5-Layer
HoodAdjustable, climbing-helmet-compatibleAdjustable Hood with Visor
Waterproof Rating—20,000mm
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