IBJJF Approved Gi Specs Explained: Buy the Right Gi the First Time (2026)

An IBJJF approved gi meets seven measured requirements set out in the federation rule book. The jacket sleeve must reach within 5 cm of the wrist when the arm is fully extended. The pant leg must reach within 5 cm of the ankle. The sleeve opening must allow a 7 cm rigid measuring stick along its full length. The gi must be white, royal blue or black in a single solid colour. Patches must sit only in approved zones. Any gi failing any single check is rejected at the bullpen, even if the rest of the kit is perfect.

What Does "IBJJF Approved" Actually Mean?

An IBJJF approved gi is a gi that meets the published measurement, colour and patch placement rules of the International Brazilian Jiu-Jitsu Federation and appears on the federation's official approved gi list. The list publishes the manufacturer name and the specific gi model that passed federation inspection. A gi from an approved manufacturer is not automatically approved on every model. The approval applies to the specific cut, fabric and configuration that the manufacturer submitted for review.

Buyers preparing for IBJJF competition need to clear two checks. The first is the published rule book, which sets the measurable specifications below. The second is the approved gi list, which confirms that a specific model has passed federation inspection. We have shipped IBJJF-spec gis to over 38 academies and competition teams across 30 plus countries through 2025, and the patterns below come from production records and post-tournament feedback rather than catalogue claims. Read the current rules on the IBJJF official site before any competition entry.

The 7 IBJJF Specs That Decide Competition Eligibility

Every gi entered at an IBJJF event clears the same seven checks at the bullpen weigh-in. The athlete weighs while wearing the gi, then submits to physical inspection by an IBJJF official who applies a wooden measuring stick at multiple points on the gi. A failure on any single point disqualifies the gi for that match. The table below shows each spec and the measurement tolerance the federation applies.

The seven specs are reviewed at the bullpen by an official with a 7 cm wooden measuring stick and a visual patch zone reference. Athletes who fail any check have one chance to swap into a compliant gi from a teammate or coach. The check happens with athletes already in their bracket time slot, so a failure under time pressure is the highest-stakes purchasing mistake in BJJ competition.

What Jacket Weight Does the IBJJF Rule Book Allow?

The IBJJF rule book does not set a maximum jacket weight in grams. The federation sets jacket weight indirectly through the athlete's total weigh-in weight, which includes the gi. A heavier jacket in 550 or 650 GSM Pearl Weave pushes the athlete closer to the weight class ceiling and risks crossing into the next class. A lighter 350 to 450 GSM jacket gives athletes margin at the scale and is the typical competition specification across the IBJJF circuit.

How Should Sleeve Length Be Measured for IBJJF?

Sleeve length is measured with the athlete's arm fully extended at shoulder height parallel to the floor. The IBJJF official measures from the tip of the gi sleeve to the wrist bone. The measured gap must be 5 centimetres or less. A gi sleeve that pulls 6 centimetres short of the wrist fails immediately. The check accounts for both initial cut and post-wash shrinkage, so athletes wearing a gi that has shrunk over years of hot wash cycles The AJP Tour rule book covers parallel patch rules for cross-federation athletes. can fail at competition despite being approved when new.

Cuff opening is measured at the same time using a 7 centimetre wide rigid wooden stick. The official slides the stick into the cuff and confirms it passes along the entire length of the sleeve. If the stick stops at any point, the gi fails. The two checks combined prevent athletes from wearing gis with tight tapered sleeves that resist opponent grip work, which the federation considers an unfair grip-stripping advantage. Confirm sleeve length against our BJJ gi size chart before any competition purchase.

What Pant Length Tolerance Does the Rule Book Set?

Pant length follows the same 5 centimetre rule as the sleeve. The athlete stands straight with feet flat on the floor. The IBJJF official measures from the hem of the gi pant to the ankle bone. The gap must be 5 centimetres or less for the gi to pass. Pant opening also requires the 7 centimetre measuring stick to pass along the entire length of the pant leg. Tight tapered pants designed for grappling mobility fail this test more often than buyers expect.

The pant length rule causes the highest single rejection rate at IBJJF bullpen checks because athletes choose pants that fit their leg length at purchase and then wash hot, shrinking the pants beyond the 5 centimetre tolerance. Our 2024 to 2025 academy data shows that 18 percent of returned pants came back due to post-wash IBJJF non-compliance. Browse the dedicated BJJ gi pants collection for sizes built with pre-shrinkage tolerance for the IBJJF measurement.

Which Gi Colours Are IBJJF Legal?

The IBJJF rule book allows three gi colours for competition: white, royal blue, and black. The colour applies to the jacket, pant and the entire gi as a single solid colour. Two-tone gis with a white jacket and blue pants are not legal. Gis with contrasting colour panels on the shoulder, lapel or skirt are not legal. A gi advertised as "blue" must be royal blue rather than navy, sky blue or any other variant. Some manufacturers ship "blue" gis in shades that fail this check at federation inspection.

The colour rule produces consistent rejections at major events. Athletes who order a "navy" or "midnight" blue gi based on online product photos arrive at the bullpen with a gi that does not match the IBJJF royal blue standard. The federation publishes reference colour swatches in the official rule book documents. Browse our BJJ gi collection for IBJJF compliant white, royal blue and black gis verified against the federation colour reference.

Where Can Patches Sit on an IBJJF Gi?

The IBJJF rule book defines specific patch zones on the gi where patches and embroidery are permitted. Patches outside these zones cause rejection at the bullpen check regardless of patch size or design. The patch placement rules are the most-often missed specification because gis ship from many manufacturers with patches pre-applied in zones the federation does not allow. Athletes assume a manufacturer-applied patch is automatically approved. The federation rule applies to where the patch sits, not who applied it.

Patches at the gi collar lapel, sleeve mid-zone, pant inseam or pant outer seam fall outside approved zones and trigger rejection. Athletes ordering custom bjj gi with extensive patch coverage should brief the patch placement against the IBJJF zone reference before final approval. Our team verifies patch placement on every academy production run, and the configuration ships from the custom academy BJJ gi page with IBJJF zone compliance built in.

How Do You Verify Your Gi Is on the Approved List?

The IBJJF approved gi list is published on the federation website and updates each calendar year. The list shows the manufacturer name, the specific gi model that passed federation inspection, and the approval status by adult, juvenile and master categories where applicable. Athletes verifying a gi for competition should check three details against the list. The manufacturer brand must appear on the published list. The specific model must match the gi being entered. The approval category must match the athlete's competition division.

Manufacturer brands that are not on the list can still ship gis to athletes for academy training and for non-IBJJF events. The approved list applies only to IBJJF sanctioned competitions including the World Championship, the Pan American Championship, the European Open and the national tournaments under federation governance. Read the current list on the IBJJF official site and cross check national rules through the United States Brazilian Jiu-Jitsu Federation before US-based tournament entries.

What Mistakes Get Athletes Disqualified at the Bullpen Check?

Most bullpen disqualifications trace back to five specific buyer mistakes. Each mistake is avoidable with a 15 minute pre-tournament check. The pattern repeats across our academy customer reports and the post-event feedback we collect from coaches and team captains across the IBJJF circuit.

• Choosing a gi that has shrunk past compliance. Hot wash cycles and tumble dry heat shrink cotton gis 6 to 8 percent across length and width. A gi that passed at purchase often fails after 30 wash cycles.
• Wearing a non-royal blue gi labelled as blue. Navy, sky and midnight blue fail the federation colour reference. Confirm the gi is royal blue in product copy and photos.
• Adding patches outside approved zones. Manufacturer-applied patches do not override the IBJJF zone rule. The zone is what matters.
• Buying from a brand not on the approved list. Many strong training gis are not registered with the IBJJF. Use these for academy training and switch to a listed brand for competition.
• Wearing tight tapered cuffs or hems. Grappling-cut sleeves and pants fail the 7 cm stick test. Choose IBJJF compliant cuff and hem widths.

The single most expensive mistake on the list is the post-wash shrinkage rejection. Athletes invest in a quality gi, train in it for two years, then fail measurement at the World Championship because the gi shrunk past the 5 centimetre wrist tolerance. Manage shrinkage with cold wash and low heat drying per our BJJ gi care guide.

How to Choose an IBJJF-Approved Gi for First Purchase

Athletes buying their first competition gi should walk through five decisions in order. The decisions compound, so getting the first wrong forces the rest into a compromise. Following the order below produces a gi that passes the bullpen check, matches the athlete's weight class strategy and survives years of training without breaching IBJJF compliance.

1. Pick the colour for your competition category. White is universal. Royal blue and black serve athletes who want a second competition gi to rotate across events.
2. Pick the GSM for your weight class strategy. 350 GSM for athletes near the upper limit of their class. 450 GSM for athletes with margin.
3. Confirm the manufacturer is on the IBJJF approved list. The approved list publishes annually on the federation site.
4. Verify the cut against the size chart for your height and weight. An A2 gi from one brand is not the same as an A2 from another brand.
5. Brief patch placement against the IBJJF zone rules. Academy patches and sponsor patches must sit inside approved zones.

Athletes who follow these five decisions rarely fail bullpen checks across years of competition. Athletes who skip the order and buy on appearance alone face the most expensive mistake in BJJ competition kit, which is a gi that becomes unusable for IBJJF events after a single wash cycle out of the legal tolerance.

Why Shapes Fightwear Builds to IBJJF Spec

Shapes Fightwear operates from Sialkot, the global cluster for combat sports apparel manufacturing. Our Sialkot facility runs IBJJF measurement checks on every production lot using the same 7 centimetre rigid measuring stick the federation uses at the bullpen. The compliance is built into the pattern, the cuff dimensions and the colour matching at the dye stage. Across our 2024 to 2025 production records 92 percent of academy briefs request IBJJF compliant cut, which sets the production default for the gis we ship.

Athletes and academies preparing for IBJJF competition can browse the full BJJ gi collection for ready-to-wear options across white, royal blue and black in 350 and 450 GSM Pearl Weave, or send an academy brief through the contact form for team orders with custom patches placed inside approved IBJJF zones.

Final Thoughts

An IBJJF approved gi clears seven specific measurement, colour and patch placement checks at the bullpen. Athletes who buy with these checks in mind enter every tournament confident the gi passes federation inspection. Athletes who buy on appearance, ignore the approved list, or skip post-wash shrinkage planning face the most expensive mistake in competition kit. Pick the colour. Pick the GSM. Confirm the manufacturer is listed. Verify the cut. Brief patch placement. In that order.

Ready to choose a competition gi? Explore the full Shapes BJJ gi collection for IBJJF compliant white, royal blue and black gis in 350 and 450 GSM Pearl Weave with measurement compliance built into every pattern.

Frequently Asked Questions

What is an IBJJF approved gi?

An IBJJF approved gi meets seven measured requirements in the International Brazilian Jiu-Jitsu Federation rule book and appears on the federation's official approved gi list. The list is published by the manufacturer and for a specific model. A gi from an approved brand is not automatically approved on every model.

What jacket weight does the IBJJF allow?

The rule book does not set a maximum jacket weight in grams. Weight is controlled indirectly through the athlete's total weigh-in including the gi. Athletes near the upper limit of their class typically wear 350 GSM Pearl Weave jackets. Athletes with weight margin can wear 450 GSM jackets.

What colours are IBJJF legal?

White, royal blue and black are the only colours approved for IBJJF competition. The colour applies to the entire gi as a single solid colour. Two-tone gis, contrasting panels, and non-royal blue shades fail federation inspection.

How long should the sleeve and pant be for IBJJF?

The sleeve must reach within 5 centimetres of the wrist when the arm is fully extended at shoulder height. The pant must reach within 5 centimetres of the ankle when standing straight. Both must allow a 7 centimetre rigid measuring stick along their full length.

Can I add custom patches to an IBJJF gi?

Yes, but patches must sit only in the seven approved zones defined in the federation rule book. Patches outside these zones cause rejection at the bullpen check regardless of patch size or design. Confirm patch placement before approval.

What happens if my gi shrinks past compliance?

A shrunken gi fails federation measurement at the bullpen and disqualifies the athlete from the match. Athletes can swap into a compliant teammate gi if available. Manage shrinkage with cold wash and low heat drying to keep the gi within the 5 centimetre length tolerance for years.

Where do I check the IBJJF approved gi list?

The approved gi list publishes on the IBJJF official website and updates each calendar year. Athletes should verify the manufacturer brand, the specific model and the approval category against the athlete's competition division before any IBJJF sanctioned tournament entry.