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JAPAN BLUE JEANS / Monster Denim Semi-Wide Tapered 5P Pants 16.5oz Cote d'Ivoire Cotton
JAPAN BLUE's super thick 16oz "Monster Denim" is tailored in a special order silhouette only for ROCOCO. The fabric we had been using was discontinued, but a rare deadstock of "Côte d'Ivoire Cotton" denim was found in JAPAN BLUE’s warehouse, and this special edition was born. It's truly a one-time-only model.
Although it is a heavyweight fabric, it is soft and comfortable to the skin due to its sweet weave, making it comfortable to wear from the start. The thicker count yarn used in the weave allows for more powerful color fading and deeper aging than normal denim.
The tapered line, which has room in the hips and gutters and falls smoothly from below the knees to the hem, smartly accentuates the presence of the monster denim.


JAPAN BLUE JEANS
Japan Blue Jeans is a denim brand from the Kojima area of Okayama Prefecture, a globally renowned denim production hub. Launched in 2011, the brand was created to spread the quality of MADE IN JAPAN denim overseas. The brand combines silhouettes recognized in Europe and America with domestic craftsmanship, offering a fresh perspective on jeans.
Versatile Setup for Any Occasion
Pairing it with the same fabric "Monster Denim Jacket" creates a recommended setup look.
16.5oz Denim Made from Cote d'Ivoire Cotton
Made with 16.5oz heavy denim woven from Cote d'Ivoire cotton.
Cote d'Ivoire cotton exhibits unique charm that cannot be found in other cottons, with variations in thread creating subtle shades that combine ruggedness with elegance. Unlike industrially processed cotton, it retains the rich expressions of the land, offering a natural feel.
As you wear it, enjoy the deep color fades and the natural texture that emerges with every wear.
Attention to Detail
The front features an easy-to-wear zipper, complemented by Japan Blue’s original zip and donut buttons, showcasing a classic five-pocket design.
The back is adorned with an original leather patch, highlighting the attention to detail.
The design of the leather patch may change depending on the season, so there may be variations. Please note that we are unable to accommodate specific design requests.
Additionally, the "red ear" selvage, an essential feature when discussing vintage jeans, is a key highlight. The red selvage is used to prevent fraying at the edges when denim is woven with old-style machines, and it is a popular detail among denim enthusiasts, symbolizing the timelessness of classic jeans.
Beautiful Tapered Line
The fit features a slightly shallow rise with a wider thigh and a beautifully tapered silhouette from the knee to the hem. This shape highlights the bold texture of the monster denim while still offering a refined, elegant look.
SIZE
※Check out the size guide for more accurate measurements.
Staff comment
●Staff (165cm/52kg) Body Type: Slim Wearing: Size 28 The waist fits perfectly. There’s a little room around the thighs, but it’s not too loose, and the fit is sleek. The length is full-length with minimal cushioning, fitting well with good balance. |
●Staff (171cm/61kg) Body Type: Average Wearing: Size 30 The waist fits just right, and the waist area is comfortable. There’s a good amount of room around the hips and thighs, but the silhouette remains neat. The length is almost perfect, and it looks natural even when rolled up. |
●Staff (177cm/67kg) Body Type: Average Wearing: Size 32 The waist fits naturally, and while there is room around the thighs, it doesn’t feel bulky. The tapering from the knee down creates a clean look, with overall good balance. The length is perfect, slightly touching the shoes. |
●Staff (181cm/80kg) Body Type: Stocky Wearing: Size 34 The waist fits just right and is comfortable. Even with a stocky build, the thighs have room, making it easy to wear. The tapering down to the hem creates a sleek appearance, and the length is almost perfect, with a neat finish. |
SPEC
Materials | 100% cotton |
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Country of Origin | JAPAN |
Model Wearing | Wearing size32 (178cm/70kg) |
Care Instructions | ※Please note that the colours may look different from the real thing depending on your monitor environment. |
Weight | 880g |
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For orders under USD185, please check our shipping policy for shipping costs.
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Features

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