ONI Demon - BJJ Rash Guard

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This design, with its brush stroke art, vivid colors, and a traditional Japanese aesthetic, pays homage to the Oni demon of Japanese mythology. The Oni is a class of yokai, or Japanese demon, and is depicted as being similar to an ogre of European mythology, but having a wild mass of hair, insidiously pointed nails, random horns jutting from their heads., and grotesque digits.

Initially believed to be evil spirits, but in some folktales, they are in fact good spirits and assist travelers and wayfarers. What that says to me is that spiritually there seems to be no black and white, but only gray, when it comes to principles such as ethics. It's also believed that if you are humble and respectful, these spirits will be more willing to assist you, which is the standard we should always hold ourselves to, the epitome of humility and respect.

Built for Mixed Martial Arts, Grappling & Brazilian Jiu-Jitsu athletes. Designed to fit comfortably with a high-quality material that doesn't tear or chafe during grappling.

  • 90% Polyester 10% Spandex
  • Moisture Wicking
  • Flatlock Stitching
  • Unisex

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    Customer Reviews

    Based on 37 reviews
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    Roxanne M.
    United States

    Great Oni rash guard

    The rashguard fits very well and looks super cool! I couldn't be happier with it!

    United States

    Best rashguard ever!

    Highly recommend. I am 5’ 9’’ with a muscular build and this fits with some wiggle room. It’s not obnoxiously tight. Great fit and the graphic is so dope!

    Narji M.

    Beautiful graphics and great quality material.

    I love this rashguard so much! I did buy the wrong size, so I have returned and I am waiting for them to re-stock. I can see why these rash guards are in such high demand. The material quality feels amazing, I’m very excited to receive the right size and train in this ONI Demon - BJJ Rashguard. I am an AUS 8-10 (women’s) I originally bought a small, it was too big. So I am going to go for the XS. Thank you Yudansha for your unique and beautiful range.

    United States

    ONI Rash Guard

    High quality product and fast shipping! Will purchase again.

    Jordan L.

    Oni Demon rash guard

    great quality. Im 170lbs and bought a Large.

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    Sizing Chart

    Rash Guard Sizing Chart

    Size Width Length Weight Class
    Small 17" 25" 140 - 155 lbs
    Medium 18" 26" 155 - 170 lbs
    Large 19" 27" 170 - 185 lbs
    X-Large 20" 28" 185 - 200 lbs
    XX-Large 21" 29" 200 - 215 lbs


    Jiu-Jitsu Gi Sizing Chart

    Gi Top A0 A1 A2 A3 A4 A5
    Sleeve Length 26" 27" 28" 30" 31" 31"
    Kimono Length 28" 30" 31" 32" 33" 34"
    Kimono Width 21" 22" 24" 25" 25" 26"


    Gi Pants A0 A1 A2 A3 A4 A5
    Kimono Pants Width 20" 20" 22" 23" 24" 25"
    Kimono Pants Length 36" 37" 39" 40" 42" 43"