BJJ Gi Size Between Two Sizes Australia: Height, Weight, Torso and Shrinkage Checklist
Being between two gi sizes is not solved by height and weight alone. Torso length, shoulder width, arm reach, leg proportion and the garment's care requirements can push the decision in different directions.
Quick answer
Start with the brand's current size chart, then compare chest or torso room, sleeve reach and trouser length. Choose the smaller option only when every key measurement remains inside the chart and you do not need shrinkage to create a safe fit. Choose the larger option when shoulder movement or reach is restricted, then assess whether the extra length is acceptable under your academy or competition rules.
Use the Combatra BJJ gi sizing guide as the broader chart-and-measurement reference before choosing between sizes.
Measure the body before measuring the gi
Record height, body weight, chest circumference, natural waist, hip, arm reach and inseam. Measure in light clothing and keep the tape level. If another person can take the chest and reach measurements, the result is usually more consistent.
Check the four fit zones
Shoulders and upper back
Cross your arms, frame and reach forward. The jacket should allow movement without forcing the collar open or pulling hard across the back.
Sleeve reach
Extend both arms naturally. Do not judge sleeve length with bent elbows only. Competition requirements can be specific, so check current organiser rules for the intended event.
Jacket overlap and torso room
The jacket should close without excessive strain and stay reasonably settled during movement. Too much body volume can bunch under the belt; too little can restrict rotation.
Trouser waist and cuff
Squat, kneel and step. Confirm the drawstring holds securely and the cuffs do not interfere with movement.
Do not buy based on planned shrinkage
Shrinkage is affected by fabric, construction, water temperature, drying method and repeated care. Buying an oversized gi with the intention of shrinking it into place adds uncertainty. First select the closest safe chart size, then follow the stated care instructions.
Check the BJJ gi washing and care guide before using any wash method that could change the fit.
Combatra gi designs to review with the size chart
Australian Emu Art Premium BJJ Gi
American Flag Patriotic BJJ Gi
Angry Pup Premium BJJ Gi
Run a movement test before deciding
Use a clean fitting surface and keep tags attached while permitted. Reach overhead, frame forward, squat, kneel and sit back toward the heels. The correct size should work through the movement, not only look neat while standing still.
Frequently Asked Questions
Should I size up when I am between gi sizes?
Size up when the smaller option restricts shoulders, reach or trouser movement. Do not size up automatically if the larger option creates excessive length or body volume.
Is height more important than weight for gi size?
Neither works alone. Height helps predict length, while weight and chest measurements help predict garment volume.
Can a tailor shorten a BJJ gi?
Alterations may affect reinforcement and competition acceptance. Ask the organiser and use a repairer familiar with martial arts garments.
How should a new gi sleeve fit?
It should allow full reach without exposing too much wrist or pulling sharply across the back. Event rules may set exact limits.
Should I wash a gi before checking the fit?
Check the retailer's return conditions first. Washing can change the garment and may affect return eligibility.
What if the jacket fits but the trousers do not?
Check whether the product offers separate sizing or contact support before compromising one half of the uniform.
A size decision is strongest when the chart, body measurements and movement test all point to the same option.