The character 忍 (NIN) stands for patience, discipline, and precise timing, qualities that define a serious practitioner, not just a symbol on a shirt. This is a regular‑weight training shirt built to reflect that mindset. It honors those who move with quiet strength, train with intention, and uphold tradition in every session and every day.
On the front: the NIN kanji. On the sleeve: the word NIN and its meaning. They’re not decoration; they are a constant reminder to preserve energy, act at the right moment, and carry one’s art with integrity in and out of the dojo. Whether you’re drilling fundamentals, attending seminars, or moving through a busy day, this shirt supports purposeful action without drawing attention away from your discipline.
If you want a shirt that feels substantial, durable, and ready for real use without losing the discipline and focus of the art this is the one to wear.
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Regular‑weight, durable fabric that stands up to repeated wear
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Breathable and comfortable for full‑day use
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Athletic, modern fit that keeps a clean line in or out of the dojo
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Durable print designed to withstand repeated washing
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Subtle design that works for training, travel, or everyday wear
Technical details:
- 65/35 poly/combed ring spun cotton
- Fabric weight: 3.5-oz/yd²
- 1×1 rib knit neck
- Double-needle edge stitch at neck
- Shoulder to shoulder taping
- Tear-away label
- Side seamed
Please note: This product is transitioning from satin labels to tear-away labels. Your order may contain a combination of both labels.
Fit & sizing guidance
Modern athletic fit. If you prefer more room, consider sizing up. Check the size guide before ordering for the most accurate fit and fewer returns.
Product Measurements
| XS | S | M | L | XL | 2XL | 3XL | |
|---|---|---|---|---|---|---|---|
| Body Length at Back | 26 1/2 | 27 1/2 | 28 1/2 | 29 1/2 | 30 1/2 | 31 1/2 | 32 1/2 |
| Chest | 16 3/4 | 18 1/4 | 19 3/4 | 21 1/4 | 22 3/4 | 24 3/4 | 26 3/4 |
| Set in Sleeve Length | 7 1/8 | 7 5/8 | 8 1/8 | 8 5/8 | 9 1/8 | 9 5/8 | 10 1/8 |
- Body Length at Back: Measured from high point shoulder to finished hem at back.
- Chest: Measured across the chest one inch below armhole when laid flat.
- Set in Sleeve Length: Measure from Center Back neck to shoulder point to sleeve hem.
Size Chart
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Chest | 32-35 | 35-38 | 38-41 | 41-44 | 44-48 | 48-52 | 52-56 |
Frequently asked questions
Will it shrink?
Minimal shrinkage when washed cold and air‑dried.
Is it suitable for training?
Yes. The fabric provides durability and breathability for practice and daily wear.
Can it be layered under a gi?
Yes. Works well as a base layer or as a standalone shirt for training.
Is the print durable?
Yes. Designed for repeated wear and wash cycles.




















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