Brands / J Koo / Clothing / Pants / Black Slim Trouser

Black Slim Trouser

Name: Black Slim Trouser
Brand: J KOO
SKU: 720284616
Price: 174.00 USD
Availability: InStock

J KOO

$174.00

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Product Insights & Style Tips

J KOO's Black Slim Trouser reads sleek city polish with a subtle tactile depth. The outer shell blends 78% polyester, 14% rayon, and 8% spandex for a crisp line that moves with you, while the 100% polyester lining keeps the silhouette smooth against the skin. In a deep true black, the cut feels streamlined and versatile, a modern wardrobe staple with a refined, easy confidence that shifts from day to night.

With a slim silhouette and stretch in the shell, the trousers skim without clinging and hold their shape through long days of errands or meetings. The full lining ensures a clean drape under tops and outerwear, making it easy to tuck in a crisp shirt or layer over a knit. Its restrained polish means it layers with blazers, knits, or oversized outerwear, moving from desk to dinner with minimal fuss.

From the Republic of Korea, J KOO brings a pared-back luxury ethos to tailoring. This Black Slim Trouser pairs with almost anything, a quiet anchor for a modern, trend-aware wardrobe.

Materials / Fabrication

Outshell: 78% Polyester, 14% Rayon, 8% Span
Lining: 100% Polyester
Color: Black
Country of Origin: Republic of Korea

Recommended Care

Machine wash cold on delicate cycle with like colors; use a mild detergent.
Do not bleach.
Tumble dry low or line dry; avoid high heat to protect rayon fibers.
If ironing is needed, use a low heat setting and a pressing cloth.
For best results, consider professional dry cleaning.

Fit Notes

Outshell fabric is a polyester and rayon blend with 8% Span, which provides a small amount of give.
Lining is 100% polyester, for a smooth interior.
Color is black, offering versatile styling.

Styling Tips

Pair it with a knitwear top to keep the clean, streamlined silhouette of the trousers.
Layer it with a jacket to define the look without competing with the pants' line.
Carry a tote bag to ground the outfit with a refined finish.

Style Check

Aesthetics: 8/10

Minimal yet confident, the Black Slim Trouser commands attention through its precise leg line and uncluttered silhouette. The rich black tone pairs with nearly any editorial moment, while a clean waistband and tailored fall create a modern, city-ready mood. The piece reads as versatile yet unmistakably polished for high fashion looks.

Craftsmanship: 7/10

Because the image suggests a crisp, structured cut, stitching appears neat and seams lay flat along the leg. The lining provides smooth inner wear, while the outer surface holds a disciplined drape without undue stiffness. If present, subtle topstitching at the hem lends extra refinement, reinforcing a sense of solid, long lasting tailoring.

Affordability: $$$$

The cost sits around 174, placing this slim trouser in a thoughtful mid range for a design focused on clean lines and tested fabric. The value feels justified by the versatile silhouette, durable stretch, and timeless black palette that translates across wardrobes and occasions, elevating everyday looks without chasing fleeting trends.

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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.