Helly Hansen Koster Rain Jacket - Blue - L

Meet your new, go-to jacket for unpredictable weather: the Koster Rain Jacket. Inspired by technic...

Best current price£90.25from Made In Paradis UK

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4 offers from £90.25 - £130.00

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Made In Paradis UKHelly Hansen Women's Blue Waterproof Jacket Koster
£17.99 delivery
£90.25
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Sneakin UKHelly Hansen Women's Blue Waterproof Jacket Koster
£17.99 delivery
£91.50
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Helly Hansen SportswearHelly Hansen Women's Blue Koster Rain Jacket - L
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£130.00
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Product Information

Full details

The Helly Hansen Koster Rain Jacket is designed for adult women who need a dependable, lightweight outer layer to navigate unpredictable weather and rainy conditions. Featuring the brand's signature Helly Tech Performance technology, it offers an effective balance of waterproof protection and breathability, making it ideal for daily commuting or light outdoor activities. While it provides excellent shelter from the elements, users should note that as a lightweight shell, it is intended for layering rather than providing heavy insulation in extreme freezing temperatures.

All features

Age Groupadult
ColourBlue
GenderFemale
SizeL
Model Part Number54378_513-L
BrandHelly Hansen

Extended Product Information

FAQs

Is this jacket warm enough for winter?

The Koster is a shell jacket and does not contain insulation. It is best used as a top layer over a warm fleece or sweater in cold weather.

Can I put this in the dryer?

Yes, you can tumble dry on a low heat setting to help reactivate the water-repellent finish.

Is the hood detachable?

The hood is integrated into the jacket design for better weather protection and is not detachable.

What does Helly Tech Performance mean?

It is a proprietary technology that ensures the fabric is both waterproof and breathable for high-intensity activity.

How should I clean the jacket?

Machine wash in cool water using a mild technical detergent, avoiding bleach and softeners.

Is the material stretchy?

The jacket is designed for a balance of durability and movement, though it is a standard woven performance fabric rather than a high-stretch material.

Troubleshooting

Water soaking into the fabric rather than beading off

The DWR coating may have worn off; wash the garment and apply a fresh DWR treatment spray.

Condensation building up inside the jacket

Ensure you are using moisture-wicking base layers and adjust the cuffs and hem for better airflow.

Pros and Cons

Pros

  • Highly waterproof and breathable construction
  • Lightweight design makes it easy to pack and carry
  • Fully seam-sealed for maximum weather protection
  • Versatile style inspired by professional sailing gear
  • Adjustable components allow for a custom, secure fit

Cons

  • Not insulated, requires mid-layers for cold weather
  • Lightweight material may be prone to snagging on sharp objects
  • Best suited for casual or light outdoor use rather than heavy-duty mountaineering

Setup, Compatibility & Care

Because the Koster is a shell jacket, it is highly compatible with various mid-layers like fleece or light synthetic sweaters. To maintain its waterproof integrity, wash the jacket in cool water with a mild detergent and avoid using fabric softeners or bleach. Tumble drying on a low setting or air drying is recommended to preserve the performance of the DWR (Durable Water Repellent) coating. Periodically re-treating the outer fabric with a water-repellent spray can help restore its shed-water capabilities over years of heavy use.

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