In battle, on the mats, and in life, true strength comes from within. KOKORO (心) is more than just a word: it is the fusion of heart, mind, and spirit, the unshakable belief that no matter the challenge, you will endure, adapt, and rise.

The Kokoro was made for moments like this: where you are not just showing up, you are owning the moment. You are in the right place, at the right time, and with the right gear.

Ready to step up your game?

Following the latest federation guidelines, we have designed a rated rashguard that, while adhering to all regulations, still maintains the high standards of all Halfsumo fighting gear.

Each hand-drawn Irezumi-style design has been reproduced in high fidelity on a breathable poly-spandex blend, with high-quality perforated side panels for increased breathability and feel. All graphics are sublimated to ensure all the artistic details are reproduced correctly without any fading.

Premium fit and feel, may be a looser/lighter fit than our regular rashguards. If you are a size medium in general, go ahead and order a size medium.

NOTE: This listing is for men's/unisex sizing - For women's sizing simply choose a smaller size than usual for a comparable women's fit - Rashguards are made from a stretchy material, so the fit differences between men's and women's cuts are minimal compared to other products.