How to Wash and Care for Your Jiu Jitsu Gi: Prevent Shrinking and Odor

Your jiu jitsu gi is more than just training equipment—it’s an investment in your martial arts journey. Whether you’ve just purchased your first gi or you’re a seasoned practitioner with multiple uniforms in rotation, understanding proper care techniques is essential for maintaining its quality, fit, and longevity. Learning how to wash jiu jitsu gi properly will save you money, preserve the fabric integrity, and ensure you always step onto the mats looking and feeling professional.

In this comprehensive guide, we’ll walk you through everything you need to know about gi care, from washing techniques to drying methods, and share expert tips for preventing the two most common problems: shrinking and persistent odor.

Why Proper Gi Care Matters

Brazilian jiu jitsu gis endure significant stress during training. Between intense rolling sessions, sweat exposure, and constant gripping, your uniform takes a beating. Without proper care, even the highest-quality gi can deteriorate quickly, losing its shape, developing stubborn odors, or becoming stiff and uncomfortable.

Proper maintenance offers several benefits:

• Extends the lifespan of your gi by several years
• Maintains the proper fit and prevents unwanted shrinking
• Eliminates bacteria and prevents odor buildup
• Preserves color vibrancy and fabric softness
• Demonstrates respect for your training partners and the art
• Saves money by reducing the frequency of gi replacement

How to Wash Jiu Jitsu Gi: Step-by-Step Instructions

The way you wash jiu jitsu gi directly impacts its longevity and performance. Follow these detailed steps for optimal results:

Immediate Post-Training Care

The care process begins the moment you leave the mats. Never leave your gi in your gym bag for extended periods. The warm, moist environment creates a breeding ground for bacteria, leading to stubborn odors that become increasingly difficult to remove.

As soon as possible after training:

• Remove your gi from your bag immediately upon arriving home
• Hang it in a well-ventilated area if you can’t wash it right away
• If washing must wait, rinse the gi in cold water and hang to dry temporarily
• Never leave a damp gi crumpled in a bag overnight

Pre-Wash Preparation

Before placing your gi in the washing machine, take these preparatory steps:

Turn your gi inside out to protect the exterior fabric and any patches or embroidery. Check all pockets and remove the belt, which should be washed separately or simply aired out (many practitioners follow the tradition of never washing their belt, though hygiene should take priority).

For heavily soiled gis or those with ground-in dirt, pre-soak in cold water for 15-30 minutes. You can add a cup of white vinegar to the pre-soak water to help eliminate odors and break down bacteria.

Washing Machine Settings

When you wash jiu jitsu gi in a machine, the settings you choose are crucial:

Water Temperature: Always use cold water. Hot water is the primary culprit behind gi shrinkage. Cold water effectively cleans your gi while preserving the fabric fibers and preventing the cotton from contracting.

Cycle Selection: Use a normal or heavy-duty cycle depending on how soiled your gi is. The agitation helps remove ground-in dirt and bacteria.

Detergent Choice: Select a mild, sport-specific detergent or a standard detergent free from harsh chemicals. Avoid bleach, which weakens fabric fibers and causes discoloration. For white gis, oxygen-based brighteners are acceptable alternatives.

Detergent Amount: Use the recommended amount—more isn’t better. Excess detergent can leave residue that traps bacteria and causes odors.

Special Additives for Odor Control

To combat persistent odors when you wash jiu jitsu gi regularly:

• Add 1/2 to 1 cup of white vinegar to the rinse cycle as a natural deodorizer and fabric softener
• Use specialized sports detergents designed to eliminate bacteria
• Consider adding baking soda (1/4 cup) to boost cleaning power
• Try enzyme-based cleaners that break down organic compounds causing odors

Drying Your Gi: Preventing Shrinkage

How you dry your gi is just as important as how you wash it. The drying process presents the greatest risk for shrinkage.

Air Drying (Recommended Method)

Air drying is the safest method to prevent shrinking:

• Hang your gi on a sturdy hanger or drying rack immediately after washing
• Choose a well-ventilated area, preferably outdoors in the shade
• Avoid direct sunlight for extended periods, which can fade colors and weaken fibers
• Ensure the gi is spread out to promote even drying and prevent mildew
• Allow 24-48 hours for complete drying, depending on humidity

Machine Drying (Use With Caution)

If you must use a dryer, take precautions:

• Use the lowest heat setting or air-fluff option
• Remove the gi while it’s still slightly damp to prevent over-drying
• Expect some shrinkage even with low heat—typically 1-2 sizes over time
• Never use high heat, which can cause immediate and irreversible shrinkage

Pro tip: If you’ve purchased a pre-shrunk gi or want to ensure a snug fit, carefully controlled dryer use can help you achieve the desired size. However, this should be done intentionally and monitored closely.

Combating Stubborn Gi Odor

Despite regular washing, some gis develop persistent odors. This typically indicates bacterial growth within the fabric fibers.

Deep Cleaning Methods

For gis with stubborn smells:

Vinegar Soak: Soak the gi in a bathtub or large basin with cold water and 2 cups of white vinegar for 30 minutes before washing normally.

Baking Soda Treatment: Add 1/2 cup of baking soda directly to the wash cycle along with your regular detergent.

Freezer Method: Place your dry gi in a sealed plastic bag and freeze overnight. This kills odor-causing bacteria (wash afterward).

Specialized Sports Cleaners: Products like DefenseSOAP or other BJJ-specific cleaners are formulated to eliminate mat-borne bacteria and fungi.

Prevention Strategies

Prevent odor problems before they start:

• Wash your gi after every single training session without exception
• Own multiple gis to rotate between training days
• Never wear a gi for multiple sessions without washing
• Store clean gis in a dry, ventilated space
• Address odor issues immediately—they become harder to eliminate over time

Additional Gi Care Tips

Patch and Embroidery Care

If your gi features patches or embroidery, turn it inside out before washing to protect these details. Consider placing the gi in a mesh laundry bag for extra protection.

Color Preservation

For colored gis, especially blue and black:

• Wash separately from white gis for the first several washes
• Use cold water exclusively to prevent color fading
• Turn inside out to protect the outer appearance
• Minimize sun exposure during drying

Dealing With Shrinkage

If your gi has already shrunk, options are limited but not hopeless:

• While damp, gently stretch the gi, especially in problem areas like sleeves and pant legs
• Wear the slightly damp gi and move through positions to help it stretch to your body shape
• Accept that significant shrinkage is typically permanent

When to Replace Your Gi

Even with excellent care, gis eventually need replacement. Signs include:

• Thinning fabric that tears easily
• Persistent odor despite deep cleaning efforts
• Significant discoloration or staining
• Excessive shrinkage affecting fit and potentially IBJJF legality
• Separated seams or damaged reinforcement areas

Frequently Asked Questions

How often should I wash my jiu jitsu gi?

You should wash your jiu jitsu gi after every single training session. Bacteria begin multiplying immediately in the warm, moist environment of a worn gi, and delaying washing can lead to permanent odor problems and potential skin infections. If you train multiple times per day, you need multiple gis in rotation.

Can I wash my gi with regular clothes?

While you can technically wash your gi with other clothing, it’s best to wash it separately, especially during the first few washes when colored gis may bleed. Gis are heavily soiled athletic wear that harbor bacteria, so washing them with regular clothes may not provide the deep clean they require. Additionally, gi drawstrings can tangle with other garments.

Will my gi shrink, and how can I prevent it?

Most gis will experience some shrinkage, particularly if exposed to heat. To minimize shrinking, always wash in cold water and air dry your gi. If you must use a dryer, use only the lowest heat or air-fluff setting. Pre-shrunk gis are available but may still shrink slightly. Purchase your gi with potential shrinkage in mind, or intentionally shrink it when new using controlled heat to achieve your desired fit.

Why does my gi still smell bad after washing?

Persistent odor indicates bacteria trapped deep within fabric fibers. This commonly happens when gis aren’t washed immediately after training or when insufficient detergent is used. To eliminate stubborn smells, try soaking your gi in white vinegar before washing, use enzyme-based sports detergents, ensure you’re using enough detergent, and consider that your washing machine itself might need cleaning. Sometimes bacteria build up in machines and transfer to clothing.