Showing up to an IBJJF tournament with an illegal gi is a brutal way to start competition day — you can be disqualified at the gi check before you ever step on the mats. The IBJJF has specific rules about gi colors, patches, and fit. Here's a plain-English breakdown of IBJJF gi requirements for 2026, plus how to make sure your gi passes inspection.
Important: the IBJJF updates its rulebook periodically. Treat this guide as an overview and always verify the current official IBJJF rules before your tournament.
Allowed Gi Colors
The IBJJF permits gis in three colors only: white, royal blue, and black. The jacket and pants don't have to match — you can wear a white jacket with blue pants, for example — but novelty colors, gray, navy, or camo gis are not allowed in IBJJF competition. If you compete in other organizations, check their rules separately; many are more relaxed.
Jacket Requirements
The jacket must be made of cotton or a cotton-like material in good condition — no rips, tears, or excessive wear. Key fit rules officials check:
- Sleeve length: With your arms extended forward at shoulder height, the sleeves must reach your wrist. Too short and you fail the check.
- Lapel thickness: The IBJJF inspects lapel construction — overly thick or rigid lapels that are hard to grip can be rejected.
- Skirt length: The jacket skirt should cover the hips adequately when the belt is tied.
Pants Requirements
Gi pants must reach the ankle bone — pants that ride high above the ankle will fail inspection. Like the jacket, they must be free of tears and made of appropriate material. Drawstrings are standard; make sure yours is functional and tied during matches.
Patches and Embroidery Rules
Patches are allowed but regulated. The IBJJF restricts where patches can go on the gi — generally permitted on the shoulders, the skirt of the jacket, and the front of the pants, while certain areas (like the back below the shoulders in some divisions) are off-limits or reserved for official use. Patches must be securely attached — loose or peeling patches can be flagged.
Keep it simple for competition: a clean gi with minimal, properly placed patches is the safest bet. Save the fully patched-up battle gi for open mats.
The Belt
You must wear the belt of your actual rank, tied with a double knot, with the ends hanging roughly 20–30 cm. Wearing the wrong belt color — even by accident — is an instant problem, so double-check your bag the night before.
What Happens at the Gi Check
Before your first match, an official inspects your gi: sleeve and pant length (the classic arms-forward test), overall condition, colors, patches, and belt. If your gi fails, you typically get a short window to change into a compliant one — which is why experienced competitors bring a backup gi to every tournament.
Tips to Pass Every Time
- Buy competition-cut gis. Gis marketed as competition or IBJJF-legal are cut to pass these checks out of the bag.
- Pre-shrink before tournament day. Wash and dry your gi the way you will before competing, then verify sleeve and pant length — never debut an unwashed gi at a tournament.
- Check your patches. Remove or reposition anything in a questionable spot well before the event.
- Pack a backup. A second compliant gi in your bag turns a failed check from a disaster into a two-minute change.
- Verify the current rulebook. Rules evolve — confirm the latest IBJJF uniform requirements in the weeks before you compete.
Shop Competition-Ready BJJ Gis
Our BJJ gis are cut to IBJJF specs — proper sleeve and pant length, compliant construction, and competition-approved colors — at $99. Pair yours with the right size using our BJJ gi size chart before tournament day.
IBJJF Gi Requirements FAQ
What colors are IBJJF legal?
White, royal blue, and black only. Jacket and pants may be different colors, but both must be one of the three.
How long should gi sleeves be for IBJJF?
With arms extended forward, sleeves must reach the wrist. Pants must reach the ankle bone.
Can I wear patches in IBJJF competition?
Yes, but placement is regulated and patches must be secure. When in doubt, go minimal.
What happens if my gi fails the gi check?
You're usually given a brief window to change into a compliant gi — another reason to always pack a backup.