Precautions for pre-orders

In principle, we cannot accept cancellations or returns for pre-ordered orders.

In addition, shipping may be delayed due to production circumstances. Please note.


Artisan pattern maker by hand

eco package


A simple standard T-shirt with a one-point dragon logo printed on it. Uses "DRY MASTER Spun" polyester material with a cotton texture. Due to the large number of fine grooves, the capillary action quickly absorbs moisture and sweat. In addition to this water-absorbing and quick-drying function, it also features anti-pilling properties and easy care. Ultraviolet shielding rate 99.1% UPF50 +, crossover of fashion and sports with water absorption and quick drying It's the material.

  • Reliable MADE IN JAPAN with a commitment to quality
  • The "Dragon" logo, which expresses strength, gives you power.
  • Comfortable material that is compatible with training
  • The quick-drying absorbent material is ideal for hard training
  • Pill-resistant fabric
  • Standard style ideal for gym training

■ Product details

- material
(Body: 96% polyester, 4% polyurethane)
- Made in Japan
- Model NO-STR-039

size Length Width shoulder width sleeve width cuff width
M. 74.5 53 45 21.3 17
L. 76.5 56 48 twenty two 17.5
XL 78.5 59 51 22.7 18

Reference size (in the case of height standard)
M : 160-170cm
L: 168-178cm
XL: 175-182cm

▼ Photo model: Alvaro wearing XL size
Height 178cm Chest 120cm Waist 80cm Inseam 75cm Weight 90kg


▼Hidemasa Yamagishi wearing XL size <br>Hidemasa Yamagishi Height 168cm

*In the case of elastic fabric, there may be errors in size.

Care instructions

*Please refrain from using a dryer as it may cause the print to peel off and the fabric to stretch.

・Avoid using bleach.
・Do not soak, do not soak for a long time or leave it wet.
・Use a net when washing, and after washing, adjust the shape before drying.
・Dye may transfer when washed with water, so wash separately from other items.
・Avoid ironing the printed part.

For accurate care instructions, please follow the precautions listed on the product's washing and quality label.

Find other products
I made the strongest T-shirt that combines fashion and functionality.

Reflector print T-shirt

The STIMIRON T-shirt, accented with a powerful dragon logo, is an item that will keep you comfortable during hard training.
It has excellent functionality such as water absorption and quick drying and UV shielding rate of 99.1% UPF 50 +, reduces stuffiness and discomfort when sweating, and can be used for a long time. We are committed to such things as high quality made in Japan and materials that do not pill easily.
Please use this reflective T-shirt to make your training more fulfilling.

Quick-drying absorbent material

The fabric is resistant to pilling, so you can use it for a long time. In addition, the "quick-drying absorption function" with many fine grooves quickly absorbs sweat and moisture. Stay comfortable during your workout. It supports hard training and reduces stuffiness and discomfort caused by sweat, as well as cold sweat after training.

reflector print

Adopted a reflector print using special ink. By reflecting light, it enhances visibility at night while highlighting the unique design. The dragon logo that stands out in the dark creates a fashionable style.


One of the discerning pieces produced in a sewing factory in Japan. High quality resides in each piece because it is carefully sewn under strict quality control. You can use it for a long time with the technology and quality that Japan boasts.

"Wear that endures hard training and improves"

Gives you the power to go beyond your limits
STIMIRON Reflector T-shirt for you.

2 color variations

White - a simple classic color

The popular classic color "white" for training T-shirts gives a simple and stylish impression.

Black - a color that gives a cool impression

You can enjoy coordinating with fashion, sports, and any other occasions with its chic and cool impression.

best dragon line for training

Dragon Series

March 2023. Hidemasa Yamagishi declared his return to the contest. We created a new apparel design line for HIDE YAMAGISHI, which competes in the world with the concept of "challenge" in the future.

Designing the strength of Hidemasa Yamagishi

Origin of dragon

Once called the Bruce Lee of the bodybuilding world, the dragon is now Hidemasa Yamagishi's trademark. As a new line of STIMIRON, we created the "Iron Dragon Logo" with the motif of the dragon that can be seen on the left arm.

STIMIRON's most important point when choosing fabrics

Pursued comfort

I was particular about comfort so that it would be easy to use for training. We wanted a comfortable fabric for dumbbell training, machine movement, and aerobic exercise.

what the dragon shows

Symbol of courage and challenging spirit

What STIMIRON's dragon series expresses is the "spirit of continuing to challenge" itself. The dragon, which is a symbol of strength, power and courage, is central to the design concept.