Kō Longsleeve, white-red-blue
Kō Longsleeve, white-red-blue
A heavyweight longsleeve carrying the kōji-tsunagi pattern — the craftsman's mark of Edo-period Japan, built on the principle of continuous refinement.
The interlocking grid has no beginning and no end. It connects what martial arts and craftsmanship share at their core: mastery is built through repetition, not in a single moment. The story behind the pattern and how it became the Kō Collection.
For anyone who connects with the culture. No gatekeeping. Please check the size chart to find your right fit.
Features
Features
· 100% organic cotton, pre-washed
· Hand-crafted, long-lasting screen print
· Traditional kōji-tsunagi back print
· SHISA logo pocket print
· Unisex sizing
· Produced in small batches
Materials & Care
Materials & Care
100% organic cotton, 240gsm weight. Machine wash cold. Air dry recommended. Iron inside out.
Size Chart
Size Chart

Sizing
Sizing
Designed for an authentic relaxed fit. Nadja is 1,69m and wears size XS. Check our detailed size chart above for measurements.
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FAQ's
What is SHISA?
The brand takes its name from Okinawan mythology. Okinawa, Japan - the birthplace of Karate - is home to traditional guardian figures called shisa, protective beings that ward off evil spirits and bring good fortune.
What makes the Kō Collection special?
The Kō Collection embodies the principle of continuous refinement found across all martial arts disciplines. Each piece features a traditional Japanese pattern and is produced in small batches with attention to craft and quality.
How should I choose my size?
The Ko collection includes different fits:
Oversize Fit (T-Shirts): Authentic oversize fit
- Oversize look → order your regular size or 1 size smaller
- Regular fit → go 2 sizes smaller
- Our model (1.78m, usually wears L) wears M for oversize
Regular Fit (Longsleeve, Crewneck): Classic fit
- Order your regular size for regular fit
- Model sizes see product photos
Size chart above for exact measurements.