Hayabusa Ascend Youth Jiu-Jitsu Gi – Kids BJJ Training & Competition Kimono

Premium BJJ gi engineered for serious young grapplers — the Hayabusa Ascend Youth Jiu-Jitsu Gi delivers the construction, fit, and durability that holds up to years of training and competition.

The Ascend Youth Jiu-Jitsu Gi is engineered around Hayabusa's commitment to combat-sport craftsmanship — pro-grade construction, athletic fit, and the durability serious training demands. Whether your child is drilling fundamentals or competing at the youth level, this gi is built to perform and outlast the belt promotions along the way.

Key Features

• Pre-shrunk pearl weave construction for consistent sizing
• Reinforced seams and stress points for durability during hard drilling
• Athletic competition-legal cut for full range of motion
• Triple-stitched lapel for grip resistance
• IBJJF-legal construction

Best For

Brazilian jiu-jitsu training and youth competition.

Available in Black, Navy, Pink, and White in sizes Y00, Y0, Y1, Y2, Y3, and Y4.

About Hayabusa

Hayabusa Fightwear has been engineering combat-sport gear since 2005, trusted by world champions and young athletes alike.

Frequently Asked Questions

How do youth BJJ gi sizes Y00 through Y4 correspond to age and height?

Youth BJJ gi sizing varies between brands, but the Hayabusa Ascend uses the following approximate guide: Y00 fits children roughly 3–4 years old (90–100 cm); Y0 fits approximately 4–6 years old (100–110 cm); Y1 fits approximately 6–8 years old (110–120 cm); Y2 fits approximately 8–10 years old (120–130 cm); Y3 fits approximately 10–12 years old (130–140 cm); Y4 fits approximately 12–14 years old (140–150 cm). Always use Hayabusa's specific size chart with your child's height and weight for the best fit, as children grow at different rates.

Is the Ascend Youth Gi legal for IBJJF youth competitions?

Yes — the Ascend Youth Gi is built to IBJJF construction standards, including lapel thickness, fabric weave, and overall construction requirements. Available in IBJJF-legal colourways (White, Blue, and Black). Always verify the specific tournament's uniform requirements before competing, and ensure patches and embroidery meet the organization's rules. The gi should be clean and in good condition for competition inspection.

How much will the Ascend Youth Gi shrink after washing?

The Ascend Youth Gi uses pre-shrunk pearl weave fabric, which significantly reduces post-purchase shrinkage. Minimal additional shrinkage (typically under 3%) may occur with the first few washes. To preserve sizing, wash cold and air dry rather than machine drying — heat is the primary cause of excessive shrinkage in cotton gi fabric. Some practitioners intentionally use warm water and drying to achieve a slight size reduction if they're between sizes.

How should I care for my child's BJJ gi?

Wash after every training session without exception — a gi that goes unwashed accumulates bacteria quickly and is unhygienic for training partners. Machine wash cold on a gentle cycle, inside out. Air dry flat or hang to dry — machine drying can cause shrinkage and weaken the fabric over time. Bleach is not recommended; it degrades the fabric and can affect colourfast dyes. A well-maintained gi washed consistently will last through multiple belt promotions.