| Size | Weight | Height |
|---|---|---|
| 00 (6-7) | 20-30kg | 110-125cm |
| 0 (8-9) | 25-35kg | 125-140cm |
| 1 (10-11) | 30-45kg | 135-150cm |
| 2 (12-13) | 40-55kg | 145-160cm |
| 3 (14-15) | 50-65kg | 155-170cm |
Complete sizing charts for children's Brazilian Jiu-Jitsu gi uniforms. Age-appropriate sizing with data-driven recommendations.

A children's BJJ gi is designed specifically for young practitioners, with proportions and safety features appropriate for growing bodies.
Children's BJJ gis are tailored for young grapplers, with safety and growth considerations in mind. The uniform consists of the same three components as adult gis: a cotton jacket, reinforced pants, and a belt indicating rank.
The jacket is proportioned for children's smaller frames and shorter torsos. It's made from durable cotton that can withstand active training while being comfortable for young practitioners. The pants are designed with children's proportions in mind and include reinforced knees for protection during training.
Children's gi sizing typically follows age-based sizing (00, 0, 1, 2, 3) rather than the A-size system used for adults. These sizes correspond to age ranges, but it's important to consider your child's actual height and weight, as children grow at different rates.
When sizing a children's gi, consider both current fit and expected growth. A gi that's slightly too large can be grown into, but one that's too small will need replacement quickly. Safety is paramount - the gi should allow full range of motion without excess material that could cause tripping or be grabbed inappropriately.
Essential information about competition rules, care, and materials
Uniform Requirements for Competition
Understanding competition rules ensures your uniform meets standards and prevents disqualification.
International Brazilian Jiu-Jitsu Federation Standards
IBJJF competitions have strict uniform requirements to ensure fairness and safety. Your gi jacket must reach at least halfway down your thighs when standing, with sleeves reaching the wrist bone when arms are extended forward. There must be 2-4 inches of space between the gi and your body when grabbing the lapel, and pants must reach the ankle bone. Only white, blue, or black gis are permitted in competition. Your belt must be tied correctly and match your rank. Patch regulations are limited, so check current IBJJF guidelines. The gi must be clean, in good condition, with no rips, tears, or excessive wear. Pre-competition inspections ensure compliance with these standards.
Abu Dhabi Combat Club Standards
ADCC is primarily a no-gi competition, though some events may offer gi divisions. When gi divisions are available, ADCC generally follows IBJJF standards for uniform requirements. However, specific ADCC events may have variations, so always check the event's official rules before competing. The organization maintains high standards for uniform quality and fit to ensure competitive integrity.
Regional Competition Standards
Local tournaments may have different rules than major organizations. Always check specific tournament rules before competing, as patch allowances, color restrictions, and fit requirements can vary. Some local tournaments allow colored gis or have relaxed patch regulations. Fit requirements are usually similar to IBJJF standards, but contact tournament organizers directly for specific uniform requirements to avoid disqualification.
Proper Maintenance for Your Uniform
Proper care extends your uniform's life and maintains hygiene.
Proper Cleaning Techniques
Start by checking all pockets and removing any items. Turn your gi or no-gi gear inside out to protect the outer fabric during washing. Use cold water (30°C or below) to prevent shrinkage, and select a mild detergent without bleach or fabric softener. Use the gentle or delicate cycle on your washing machine. For hand washing, use cold water with gentle agitation. On your first wash, consider pre-shrinking by washing in warm water if you want to minimize future shrinkage, though this is optional.
Proper Drying Methods
Air drying is the preferred method for preserving your uniform's quality and preventing shrinkage. Hang your gi on a hanger or lay it flat to dry. Avoid direct sunlight to prevent color fading. If you must use a dryer, use low heat only and remove the uniform promptly when dry to prevent wrinkles. Hang by the shoulders, not the collar, to maintain the gi's shape and prevent stretching.
Do's and Don'ts
Always wash your uniform after every training session for hygiene. Use cold water and turn items inside out before washing. Air dry when possible, check care labels, and wash separately, especially new gis. Never use bleach or fabric softener, as these can damage the fabric. Don't dry clean, iron (especially patches), leave wet gear in a bag, or use high heat. These practices will extend your uniform's life and maintain its quality.
Maintaining Proper Fit
Most cotton gis shrink 3-5% after the first wash, which is why many practitioners buy slightly larger. Pre-shrink new gis with a warm wash before first use if you want to minimize future shrinkage. Always account for shrinkage when purchasing - consider buying slightly larger if you're between sizes. Cold water washing minimizes shrinkage. If your gi shrinks too much, some brands offer exchange programs, but prevention through proper sizing is key.
Treating Common Stains
For blood stains, rinse immediately with cold water, then apply hydrogen peroxide before washing. Sweat stains can be pre-treated with a white vinegar solution before normal washing. Mat marks require pre-treatment with stain remover and gentle scrubbing before washing. For general stains, treat immediately with cold water and avoid harsh chemicals. Always test stain removal methods on a small, inconspicuous area first.
How Often to Clean
Wash your uniform after every training session for hygiene and to prevent odors. Deep clean monthly with a vinegar solution to remove persistent odors and bacteria. Before competition, ensure your gi is freshly washed and pressed for a professional appearance. Never train in an unwashed uniform - it's unhygienic, disrespectful to training partners, and can lead to skin infections.
Understanding Fabric Types
Understanding gi materials helps you choose the right uniform for your training style.
Traditional Material
Cotton is the traditional gi material, offering excellent breathability and comfort. Standard weight cotton is the most common choice for training gis. It provides a classic feel that many practitioners prefer. However, cotton gis can shrink significantly (typically 3-5% after first wash) and become heavier when wet. While less durable than specialized weaves, cotton gis are more affordable and ideal for beginners, regular training, and hot climates where breathability matters most.
Lightweight Competition Choice
Pearl weave is a lightweight weave pattern that balances durability and breathability. This makes it popular for competition, where weight matters but strength is still required. Pearl weave gis are competition-approved and offer excellent performance in hot weather. They're ideal for frequent training and competition use, though they tend to be more expensive than standard cotton gis.
Maximum Durability
Gold weave is a heavier, more durable weave that provides excellent grip and longevity. The tighter weave pattern creates a stronger fabric that can withstand intense training. Advanced practitioners favor gold weave for its grip advantages and long-lasting quality. However, the heavier weight can make it hot in warm climates, and it's typically more expensive. Best for practitioners who rely heavily on gi grips and want maximum durability.
Lightweight Travel Option
Ripstop is a very lightweight, quick-drying material that's durable and travel-friendly. It's perfect for practitioners who travel frequently or prefer lightweight gear. However, check competition rules carefully, as some organizations restrict or prohibit ripstop gis. The material has a different feel than traditional cotton and can be less breathable. Best for travel, quick-dry needs, and those who prioritize lightweight gear.
Eco-Friendly Option
Hemp is a natural, eco-friendly material that's durable and antimicrobial. It's growing in popularity among environmentally conscious practitioners who want sustainable gear. Hemp gis offer excellent durability and natural antimicrobial properties. However, they're more expensive and have limited availability. The material can be stiffer initially but softens with use. Best for eco-conscious practitioners seeking durable, sustainable gear.
We're working on gathering brand information for this category. Check back soon for detailed brand comparisons.

Stop guessing your BJJ uniform size! Our intelligent sizing tool analyzes your measurements and recommends the best-fitting brands and sizes.
Children's gi sizing is based on age ranges, but you should also consider your child's height and weight. Size 0 typically fits ages 8-9 (125-140cm), Size 1 fits ages 10-11 (135-150cm), and Size 2 fits ages 12-13 (145-160cm). Always consider growth - buying slightly larger allows room to grow, but too large can be unsafe. Use our Find Your Fit tool for personalized recommendations.