BJJ Gi Size Guide

Use this guide to understand common BJJ gi size labels and prepare the measurements needed before ordering. Fit can vary between products, cuts, and batches, so always review the sizing information shown on the individual product page.

Measurements to take

• Height: Measure without shoes.
• Weight: Use your current training weight.
• Chest: Measure around the fullest part of the chest.
• Waist: Measure where the gi pants will sit.
• Inseam: Measure from the crotch to the ankle.
• Arm length: Measure from the shoulder to the wrist.

Understanding common BJJ gi labels

Adult gi sizes commonly use labels such as A0, A1, A2, A3, A4, and A5. Some products also offer long or husky variations. An L suffix generally indicates a longer cut, while an H suffix generally indicates a roomier cut. Exact measurements differ by product, so these labels should not replace the product-specific chart.

Kids BJJ gi sizing

For children, compare current height and weight with the product information and allow reasonable room for movement. Avoid choosing a size that is excessively loose, especially when the uniform will be used for regular academy training.

Fit and shrinkage considerations

Check each listing for fabric, washing, and care information before selecting a size. Washing and drying methods can affect fit. Follow the product care instructions and avoid assuming that every gi will shrink by the same amount.

Need sizing help?

Send your height, weight, chest, waist, inseam, and preferred fit to cosmeioofficial@gmail.com before ordering. For return eligibility, review the Return & Refund Policy.

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