Helly Hansen Koster Rain Jacket - Blue - S

The Helly Hansen Koster Rain Jacket is designed for wet and rainy city conditions, blending urban ...

Best current price£81.02from Made In Paradis UK

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Made In Paradis UKHelly Hansen Men's Blue Waterproof Jacket Koster
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Sneakin UKHelly Hansen Men's Blue Waterproof Jacket Koster
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Product Information

Full details

The Helly Hansen Koster Rain Jacket is an ideal choice for adults navigating wet urban environments who require a blend of professional aesthetics and rugged, marine-inspired weather protection. Featuring signature Helly Tech technology, this jacket ensures you remain dry and comfortable during heavy rain, though its lightweight design is optimized for city commuting rather than extreme mountain expeditions.

All features

Age Groupadult
ColourBlue
GenderMale
MaterialPolyester
SizeS
Model Part Number54392-597
BrandHelly Hansen

Extended Product Information

FAQs

Is the Helly Hansen Koster Rain Jacket fully waterproof?

Yes, it features Helly Tech protection and fully sealed seams to provide a complete waterproof, windproof, and breathable barrier.

Can I wear this jacket in the winter?

It is a shell jacket and does not contain insulation. It is best used for rainy weather; for winter, we recommend layering it over a thermal fleece or down jacket.

How should I wash this jacket?

Machine wash on a gentle cycle with cold water using a mild technical detergent. Avoid using fabric softeners.

Does it have an internal pocket?

The Koster features two external hand pockets with YKK zippers; it does not typically include internal storage pockets.

Is the material stretchy?

The jacket is crafted from polyester, which provides a structured, durable feel rather than a stretchy fit.

Can the hood be removed?

No, the hood is integrated into the design to ensure maximum water protection and to maintain the integrity of the sealed seams.

Troubleshooting

Water appears to soak into the surface fabric

The DWR coating may have worn off; use a technical re-waterproofing spray specifically formulated for polyester shells.

Condensation building up inside the jacket

Ensure the jacket is properly ventilated by loosening the cuffs or unzipping slightly if your activity level increases.

Pros and Cons

Pros

  • Excellent waterproof and windproof capabilities
  • Lightweight and breathable construction for daily comfort
  • Modern, urban aesthetic suitable for city wear
  • Reliable YKK zippers for long-term durability
  • Adjustable components for a tailored fit

Cons

  • Not intended for technical alpine or extreme mountaineering conditions
  • Polyester material lacks the natural stretch of some high-end softshells
  • Limited to city-focused features without specialized gear loops

Setup, Compatibility & Care

To maintain the integrity of the jacket's waterproof membrane, follow these care guidelines:

  1. Cleaning: Machine wash on a gentle cycle in cool water with a technical detergent designed for waterproof gear.
  2. Drying: Air dry whenever possible to protect the DWR (Durable Water Repellent) coating.
  3. Storage: Hang the jacket in a cool, dry place; avoid folding it for extended periods while damp to prevent mildew.
  4. Compatibility: The Koster is designed as a standalone layer. Its regular fit allows for layering a mid-weight sweater or fleece underneath without restricting movement.

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