A gi that shrinks two sizes in the wash is a rite of passage nobody needs. Looking after a gi is simple once you know the one rule: heat is the enemy.
The short version
Wash it after every session, in cold water, and hang it to dry. That's most of it.
Step by step
- Get it out of your bag quickly. A damp gi left in a bag is how the smell starts.
- Tie the drawstring on the pants so it doesn't pull out in the machine.
- Turn it inside out to protect patches and embroidery.
- Wash cold, with a normal detergent.
- Hang it to dry, out of direct sun if you can, since strong sun fades colours over time.
Hayabusa gives the same advice on its own gis: wash cold, hang to dry.
Why it shrinks
Cotton fibres tighten when they get hot, in a hot wash and especially in a tumble dryer. Pre-shrunk gis have been treated so this happens less, but even then some shrinkage is normal: Gold BJJ says to expect some from its pre-shrunk gis, with lighter gis like the Aeroweave shrinking less than heavier ones.
Can I use a tumble dryer?
Avoid it if you can. It's the fastest way to shrink a gi. Some budget gis say they can be machine dried, but hanging is always the safer option.
How often should I wash my gi?
After every session. Mats are a breeding ground for skin infections, and the IBJJF won't let you compete in a gi that's dirty or smells. If you train a lot, a second gi means you're never pulling a damp one on. See the best gis for budget options.
What about the smell?
The best prevention is washing promptly and drying fully. A common fix for a gi that's started to smell is a cup of white vinegar in the wash. Fabric softener is usually best avoided on a gi.
Don't forget the rest
Rash guards, shorts and belts need washing too. The belt is the one people forget: traditions vary, but hygiene doesn't.
FAQ
How do you wash a BJJ gi without shrinking it?
Wash it in cold water and hang it to dry. Heat, in a hot wash or a tumble dryer, is what shrinks cotton. Buying a pre-shrunk gi helps too.
How often should you wash a BJJ gi?
After every training session. Damp, sweaty gis grow bacteria, and the IBJJF won't let you compete in a gi that's dirty or smells.
Should I wash my BJJ belt?
Yes. Belts collect sweat and bacteria like the rest of your kit. Wash it cold with your gi and hang it to dry.
