Black Oversized Double-Breasted Blazer for Seoul Streetwear Layering

Oversized Double-Breasted Blazer with Seoul After-Dark Energy

Tailoring does not have to feel formal. This black oversized double-breasted blazer takes the composed structure of classic suiting and shifts it into a modern Seoul streetwear setting. With its broad silhouette, sharp notched lapels, and statement metal-button front, it is made for building outfits that look intentional without looking overdone.

In contemporary Korean fashion, oversized tailoring is more than a trend—it is a styling language. Relaxed proportions create room for personality, allowing a blazer to move easily between minimal monochrome looks, K-pop-inspired layers, smart casual fits, and experimental streetwear combinations.

Designed to Make Everyday Layering Look Effortless

The blazer features a long, loose profile that drapes over tees, shirts, knitwear, or hoodies with ease. Structured shoulders bring definition to the relaxed fit, while the double-breasted closure and wide lapels keep the silhouette polished. Flap waist pockets add a classic tailored finish and an easy place to rest your hands when you are out in the city.

• Oversized streetwear fit: A relaxed silhouette designed for contemporary layered styling.
• Double-breasted front: Metal buttons create a refined, confident focal point.
• Wide notched lapels: Classic tailoring detail with a stronger, more fashion-forward scale.
• Structured shoulder line: Adds shape and balance to the loose cut.
• Versatile black finish: A wardrobe essential that works with monochrome, neutral, and graphic looks.
• Flap pockets: A functional detail that reinforces the blazer’s tailored character.

From Classic Tailoring to Korean Streetwear

The double-breasted blazer has roots in traditional European tailoring, where its overlapping front and balanced button layout projected authority and precision. Today, Seoul fashion reinterprets that heritage through proportion: longer hems, dropped volume, casual footwear, and unexpected layers. This oversized blazer captures that contrast—clean enough for a gallery opening or dinner reservation, relaxed enough for a late-night street fit.

Wear it open over a white shirt and shorts for an editorial Korean fashion look, or button it up with wide-leg trousers for a darker, more minimal silhouette. Add silver accessories, a pearl necklace, loafers, sneakers, or chunky boots to shift the mood from polished to rebellious.

How to Style This Black Oversized Blazer

• Seoul minimal: Pair with a fitted tee, black wide-leg pants, and clean leather sneakers.
• Smart streetwear: Layer over a patterned button-up shirt with tailored shorts and crew socks.
• Avant-garde monochrome: Style with a longline top, loose trousers, and sculptural jewelry.
• Campus to nightlife: Wear with denim, a hoodie, and retro runners for an elevated off-duty outfit.
• Gender-fluid tailoring: Let the oversized proportions contrast with slim layers, mini skirts, or soft knitwear.

Product Details

Oversized Double-Breasted Blazer Size Chart

Measurements are taken manually and may vary slightly. For the intended oversized look, select your usual size. If you prefer a more controlled fit, compare the garment measurements with a blazer you already own.

Model reference: Height: 175 cm / 5 ft 9 in. Weight: 85 kg / 187 lbs. Wearing size M for a loose fit.

Care Recommendation

To preserve the blazer’s clean shape and smooth tailored appearance, hang it on a broad-shouldered hanger after wear. Follow the care label instructions for cleaning, and avoid overcrowding it in storage to help maintain the lapels and shoulder structure.