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506ZRNA 20oz Secret Denim Tight Fit Straight "No Arc" Version

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Oni Denim

506ZRNA 20oz Secret Denim Tight Fit Straight "No Arc" Version

Item Information
Fabric Weight (ounce)0.9
Type of FabricUnsanforized denim
Type of CottonAmerican cotton
RoughnessVery rough
Shrinkage (%)9
Fading SpeedFast
Methods of DyeingRope dyeing with pure indigo
SilhouetteSlim tapered
RiseSemi low rise
ThighsSemi slim
This is Oni's new model, the ONI-506ZR! This model has been produced based on the previous 507ZR model but the thigh and knee have been made smaller by 3mm while the hem has been made smaller by 5mm. So, it becomes much tighter with stronger tapered cut. Although the silhouette is almost same as the 517 but with the adoption of secret denim, shrinkage becomes a little bigger. Although it depends on how it is washed and dried, compared to the 517 model it has been reduced by about half an inch.
Size Chart (One-wash)
Size Chart (Non-wash)

We are proud to offer free worldwide shipping for orders over ¥15000.

Normally it takes 2-3 days for an order to reach most East Asian countries and North America, and 3-4 days for other parts of the world, once the item is picked up by Fedex or EMS at our warehouse. If the order was placed over a weekend, it will be processed the next business day, so it may take 1-2 more days to reach you.

Note that some items need to reach our dispatch location from various places in Japan, which may add 2-3 days to the order processing time. We nonetheless strive to get your products to you as soon as possible, and most customers will receive in-stock items within one week. 

If your item doesn’t fit, if you simply don’t like it, if you want a different color, please use
After receiving your return request, we will arrange a pickup for your item, which will be cheaper than using a postal service with no discount.




  1. Step1: We will prepare shipping documents (Airway bill and Commercial Invoice) to you. Please print them out and sign all of them.
  2. Step2: Call Fedex and request for a pick-up.
  3. ( Find your FedEx Locations from the URL below)
  4. Step3: Fedex driver will come for the pick-up. Please hand him the return package as well as shipping documents(Airway bill x 1 copy and Commercial Invoice x 3 copies).
  5. Step4: Once return product reaches, we will inspect the condition of the product and make a refund via the payment method you used. 


Same as above. Please return the product and place a new order for the right size.

Return conditions:

  • - The item must be unworn, unsoaked and still have tags on it. Hemmed products cannot be returned even in brandnew condition.
  • - The item must be in the original packaging.
  • - Return request must be made within 7days after receiving the product.


For any questions, please send an email to with your full name and the order number.

Availability: In stock

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Customer Reviews

Everything going all right.
Denim is fantastic, Denimio are fast and accurate.
I will buy again really soon! (Posted on 12/21/16)
Incredible Denim Review by Lex
Oni delivers, Denimio delivers. Simple as that! The secret denim is simply unbelievable, pure quality craftsmanship. Although i expected the cut to be tighter and more tapered, I still love it.

The staff suggested one size bigger than what i usually wear, and after 2 hot soaks, these fit really well, and are already super comfortable.

The customer service is impeccable too, but that goes without saying, since everyone agrees on this. (Posted on 5/2/16)
Fantastic! Review by Evil_OOb
First time buy... And I think It won't be the last one!
5days to reach France, not bad at all!
The jeans is... Aboslutely FANTASTIC! So slubby, so neppy, so cool!
I gave him a soak to get rid of the shrinkage and the size is correct. The fit is exactly what I expected... But, sorry, I didn't follow your measurement, which are not accurate compared to others one. (Flat method)... Anyway, I'm very very happy! Looking foward to show you the evolution!!! (Posted on 3/28/16)
Incredible service, quality and fit! Review by Rk
This is my first time buying from Denimo but the experience has made me a dedicated customer. Went back and forth through many emails about the different versions of Oni and the sizes. Finally settled on this 506 version and I'm blown away. The fit was snug at first but now they are incredibly comfortable and I can't stop looking at them (Posted on 3/9/16)
great cut and amazing texture Review by Markus
If you know ONI, you know what you get: slubby, neppy texture and great workmanship. What can I say, this jeans does not disappoint. The cut is slim but not skinny. I really dig it.
Thanks to Denimio for great, great costumer service and the fastest delivery possible. Honestly, their parcels from Japan to Germany are faster delivered than some parcels within Germany. I am – as always – impressed :) (Posted on 10/7/15)

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