A smart alternative to a traditional sweatshirt, the Helly Hansen Koster Sweat 1/2 Zip combines clean Scandinavian styling with comfortable everyday versatility.
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25-31 Newry Street
Banbridge BT32 3EA
United Kingdom
+442840662750
Helly Hansen Mens Koster Sweat 1/2 Zip Navy
Finished in classic Navy, the Koster Sweat has a refined, understated appearance that makes it easy to move between casual and smarter off-duty outfits. The minimalist design is complemented by a small contrasting HH logo at the chest, giving the piece a recognisable Helly Hansen finish without overpowering its clean look.
A half-length zip at the neckline allows the Koster to be worn zipped up for additional coverage or opened for a more relaxed appearance. The raised stand collar adds warmth around the neck and gives the sweatshirt a slightly smarter profile than a conventional crew-neck style.
Subtle horizontal seam detailing across the chest and body introduces structure while maintaining the streamlined aesthetic. Long sleeves, neatly finished cuffs and a straight hem complete the design, creating an uncomplicated layer that works particularly well throughout the transitional seasons.
Wear the Koster Sweat 1/2 Zip over a T-shirt with jeans and trainers for an easy weekend combination, or team it with chinos and casual boots for a more polished look. Its classic Navy colouring also makes it particularly easy to layer beneath gilets and jackets when cooler weather arrives.
Comfortable, versatile and deliberately understated, the Koster is an ideal choice for anyone looking for a casual layer with a slightly more refined finish.
Clean, versatile and easy to layer, the Helly Hansen Koster Sweat 1/2 Zip brings a smart edge to everyday casual dressing.
Enjoy FREE standard delivery when you spend over £79.99.
Orders under £79.99 are charged at £3.95.
Need it sooner?
Express Delivery (£5.95) – delivered in 2–3 working days (order before 2pm Mon–Fri)
Next Day Delivery (£9.95) – (order before 2pm Mon–Fri)
DPD UK (£7.95) – please note this is not an express service
All deliveries require a signature on arrival.
UK Returns
You have 30 days to return your order.
Return postage is paid by the customer. You can use our Royal Mail returns label for £3.95, deducted from your refund, arrange your own courier, or return to our Banbridge store free of charge.
If you arrange your own return, the item is your responsibility until it reaches us, so we recommend using a tracked service.
Faulty or damaged items are returned free of charge — just contact us before sending anything back.
Full details are available on our Delivery & Returns page
Things You Might Like To Know
If you can’t find the answer you’re looking, don’t worry—we’re here to help. Whether you have questions about sizing, fabrics, shipping, or anything else, feel free to reach out to our team. Your satisfaction is our top priority.
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