This size chart is for kids' sizes (K1 to K5) for all of our kids' gis. We also offer our gis and adult unisex and women's cuts.
You might find that your child's frame is suitable for multiple sizes - gi sizing is a matter of personal taste. If you'd like them to wear a tighter, more slim fitting cut you should err toward the smaller size. If you prefer extra room in their gi you can choose the larger size in your range.
| Size | Age | Height |
| K1 | 4 to 5 years | 3'5" to 3'103" |
| K2 | 5 to 7 years | 3'10-" to 4'3" |
| K3 | 7 to 9 years | 4'3" to 4'7" |
| K4 | 9 to 11 years | 4'7" to 4'11" |
| K5 | 11 to 13 years | 4'11" to 5'4" |
While we use pre-shrunk fabric in all of our gis, you can still expect some shrinkage (especially if you're washing in hot water, or tumble drying). For more information on gi shrinkage, check out this video.
Not sure if you're choosing the right size? We get it, gi sizing can be tricky. That's why we offer totally free pre-paid returns.
$99.99 Size Guide
This size chart is for kids' sizes (K1 to K5) for all of our kids' gis. We also offer our gis and adult unisex and women's cuts.
You might find that your child's frame is suitable for multiple sizes - gi sizing is a matter of personal taste. If you'd like them to wear a tighter, more slim fitting cut you should err toward the smaller size. If you prefer extra room in their gi you can choose the larger size in your range.
| Size | Age | Height |
| K1 | 4 to 5 years | 3'5" to 3'103" |
| K2 | 5 to 7 years | 3'10-" to 4'3" |
| K3 | 7 to 9 years | 4'3" to 4'7" |
| K4 | 9 to 11 years | 4'7" to 4'11" |
| K5 | 11 to 13 years | 4'11" to 5'4" |
While we use pre-shrunk fabric in all of our gis, you can still expect some shrinkage (especially if you're washing in hot water, or tumble drying). For more information on gi shrinkage, check out this video.
Not sure if you're choosing the right size? We get it, gi sizing can be tricky. That's why we offer totally free pre-paid returns.
Our popular Aeroweave gi is now available for kids.
Ships Today from San Diego • Free Returns
When it comes to lightweight gis, the Aeroweave is about as light as it gets.
Featuring a 275 GSM Jacket and 10oz Ripstop Pants, this gi will help keep kids cool during training.
We went through several sizing iterations (on our kids, who you see on this page!) to make sure the measurements are dialed in: not too baggy, and not too loose.
Every Kids' Aeroweave Gi comes with a white belt, so your kids are ready to hit the mats immediately.
Kid-friendly elastic waistband and draw cord means less time fussing with keeping pants tied, and more time learning Jiu Jitsu.
We chose a minimalist aesthetic for this gi so your kid's style can shine.
Pair with our Kids' Contender Rash Guard.
United StatesFantastic gi! Added bonus for the color options!
United StatesHighly recommend their aeroweave line for kids. My son can move easier and doesn’t retain as much sweat either their gi’s �
United StatesI like the fit and overall look of the gi My daughter loves her new gi and looks forward to becoming a champion while wearing it.
United StatesGreat company. Always quick shipping and great communication.
