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In Four Hands Episode 4, Kang Bi-o's wardrobe strikes a distinct balance between conservatory precision and lived-in campus warmth. Viewers tracking his looks will spot two standout outerwear pieces—a camel hooded duffle coat and a deeper navy toggle coat—paired with clean collared shirting and rehearsal-ready grey knitwear. The exact on-screen brands for these pieces were not confirmed in the available production notes, so we are focusing on accessible alternatives that share the same silhouette, drape, and visual weight. Here is how the key styles break down and how you can work similar cuts into your regular rotation.
The Camel Duffle Coat and Crisp Collared Base
Bi-o spends much of the early episode bundled in a warm camel hooded duffle coat. The coat features traditional toggle closures, structured shoulders, and a roomy cut that accommodates layered knits and school uniform tailoring without bunching. That warm tan shade creates an approachable, collegiate mood that stands out nicely against cool indoor lighting.
When shopping for a similar outer layer, pay close attention to length and shoulder structure. Mid-thigh cuts work cleanly across most heights without cutting off your leg line, whereas calf-grazing lengths can swallow shorter torsos unless worn unbuttoned. Heavier wool blends hold their boxy drape better, but lighter unlined blends keep the silhouette breezy if you run hot. Keep in mind that specific on-screen maker tags remain unconfirmed.
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For pairing underneath, a crisp woven shirt keeps the neckline tidy around the hood. The Amazon Essentials men cotton Oxford shirt, blue — similar style offers a 100% cotton construction with a classic button-down collar that maintains its shape beneath heavy outer layers. Check the merchant listing directly for sizing dimensions and current delivery timelines.
If you are curious how Bi-o's wardrobe matures as the competition intensifies later in the run, take a look at our breakdown of Four Hands Episode 11 Outfits.
Conservatory Knitwear for Practice Room Mobility
Inside the practice hall, the outerwear comes off to reveal a minimalist, focused uniform: a heather grey knit pulled over a collared dress shirt and striped tie, anchored by navy trousers. The sweater has a soft medium gauge that allows full arm movement at the keys while maintaining a crisp, academic neckline.
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Getting this look down comes down to proportion. A medium-weight knit with ribbed cuffs keeps sleeves securely at the wrist, preventing excess fabric from pooling over your hands. If you prefer avoiding a full tie and collar combo, a collared knit offers a similar visual structure in a single piece. The COOFANDY grey long-sleeve knit polo — similar style delivers that clean grey rib-knit texture with a built-in polo collar for an effortless studio aesthetic. Review the retailer page for fabric specifications and live stock status.
For additional story context surrounding Bi-o's musical journey and high-pressure performances, catch up with our Four Hands Episode 11 Recap.
Dark Navy Outerwear and Structured Tailoring Options
Later scenes switch to a darker navy duffle coat fitted with bright rope loops and wooden toggles. The dark navy tone gives Bi-o a moodier, more restrained posture during chilly hallway conversations, contrasting sharply against the lighter camel coat seen earlier.
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Navy outerwear remains one of the easiest shades to integrate into an everyday wardrobe because it pairs effortlessly with grey slacks, dark denim, or tailored trousers. For times when a full duffle feels too casual or bulky, swapping the coat for a structured navy jacket gives you the same deep-toned refinement with a sharper shoulder line. The KSWYCT navy double-breasted blazer — similar style gives a structured, slim-fit silhouette that channels formal campus tailoring. Check the product page for accurate fit measurements and current seller terms before deciding.