For you, going beyond your limit.

Giving your best shot, believing thoroughly in your own possibility.

An intense iron-like stimulation for you, who never stops evolving while training to your limit.

We are a tough fitness wear brand that supports you,who embodies “No Limits – Think Infinite.”


[Spring & Summer new work] Dragon series


Professional bodybuilder Hidetada Yamagishi, who has decided to return to active duty to challenge his own limits again, will take on the world with his new design "IRON DRAGON.

Hidetada Yamagishi

IFBB professional bodybuilder Hidetada Yamagishi. The YouTube channel has over 270,000 people (as of September 2022), and is transmitting muscle training information and daily life to trainees around the world. If you want to know more about Hide, check this out!

Learn more about STIMIRON.

CONCEPT - concept

STIMIRON is an apparel brand for all workout lovers. Try on the clothes many times to check the comfort and texture. All apparel is made in Japan.

MESSAGE - From Hidemasa Yamagishi to everyone

Message from Hide Yamagishi, owner of STIMIRON. He writes about the background and thoughts behind the creation of this apparel brand.

STORY - The Trajectory of STIMIRON

Became a bodybuilder in 2002 and participated in numerous competitions. It traces Yamagishi's career and the trajectory up to the birth of STIMIRON.

STIMIRON promotion video

This is a promotional video for "STIMIRON" that embodies the spirit of NO LIMITS. Produced by a team specializing in film production. This video is filled with the thoughts of Hide Yamagishi.

Related Sites

BodiCafe | Hide Yamagishi & Iris Skyle Supplement Specialty Store

A supplement mail-order shop for bodybuilders carefully selected by Hide Yamagishi and Iris Kyle. We handle many items that are not available in Japan, from popular supplements in the United States. Items are shipped from Las Vegas. You can contact us in Japanese.

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