J KOO a black half zip-up
J KOO a black half zip-up

a black half zip-up

J KOO

$146.00

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Product Insights & Style Tips

J KOO delivers a quietly cool, practical take on a basic with a black half zip-up. The outshell is 100% cotton, giving a soft, breathable hand and a clean, matte finish that wears well over time. The rib is 100% cotton as well, adding subtle texture and a touch of stretch at cuffs and hem. The result is a piece that feels at once simple and considered, ready to slip into a minimalist, city-ready wardrobe.

Its half zip offers easy ventilation and layering flexibility without bulk. The cotton-on-cotton construction glides over a tee or light layer and sits slim without feeling tight, thanks to the rib detail. The silhouette stays neat as you move, holding its shape from morning coffee to after-work drinks. A versatile layer that pairs with jeans or trousers and transitions across casual and more polished settings with ease.

Made in the Republic of Korea, this piece nods to a heritage of clean lines and quiet craftsmanship that aligns with J KOO's modern, pared-back codes. In black, it becomes a reliable anchor in a wardrobe that favors interchangeable layers and a reduced color palette.

Materials / Fabrication

  • Outshell: Cotton 100%
  • Rib: Cotton 100%
  • Country of Origin: Republic of Korea

Recommended Care

  • Machine wash cold with like colors on a gentle cycle.
  • Use non chlorine bleach when needed.
  • Tumble dry low or lay flat to dry.
  • Iron on low to medium heat if needed.

Fit Notes

  • Outer shell is cotton and the rib is cotton.
  • Half zip-up closure provides a zip front option.
  • Category is Tops, indicating an upper layer garment.
J KOO a black half zip-up

Styling Tips

  • Pair it with pants to balance the zip-front silhouette and keep the look cohesive.
  • Layer it with knitwear to add warmth and a textural contrast with the cotton.
  • Finish with a pair of mules for a streamlined, leg-lengthening line.

About J Koo

J Koo is a Korean fashion label that was founded by Central Saint Martins graduates Yeonjoo Koo and Jinwoo Choi. The husband-and-wife duo draws inspiration from traditional British menswear tailoring techniques into its sophisticated, modern designs. Shop the latest collection from J Koo, ranging in blazers, dresses, sweaters, trousers and jackets.