How to Choose the Right BJJ Rashguard: Fit, Fabric and Features

Choosing the right BJJ rashguard can make training more comfortable, whether you practise No-Gi Brazilian Jiu-Jitsu or wear one underneath your Gi.

A good rashguard should stay securely in place, allow unrestricted movement and withstand regular contact with the mats. This guide explains what to consider before selecting your next BJJ rashguard.

Why Wear a Rashguard for BJJ?

A rashguard is a close-fitting athletic shirt designed for training and movement. In Brazilian Jiu-Jitsu, it creates a smooth layer between your skin, training partners and the mats.

A properly fitted rashguard can help:

• Reduce friction during grappling

• Manage sweat and moisture

• Prevent loose fabric from catching on fingers

• Keep you more comfortable under a Gi

• Provide coverage during No-Gi training

Rashguards are not a replacement for good hygiene. Always begin training with clean equipment and wash your rashguard after every session.

How Should a BJJ Rashguard Fit?

A BJJ rashguard should fit closely against your body without limiting your breathing or movement.

It should feel secure around your chest, shoulders and waist. When you raise your arms, rotate your torso or move into a grappling position, the fabric should stretch naturally without pulling excessively.

Avoid a rashguard that is too loose. Extra material can bunch around your waist, move during rolling or become uncomfortable under a Gi.

A rashguard that is too small may restrict movement, place unnecessary pressure around the neck and shoulders or overstretch the seams.

Before ordering, compare your measurements with the brand’s size chart. Do not assume that your regular T-shirt size will always be the correct rashguard size.

What Fabric Is Best for a BJJ Rashguard?

Most quality BJJ rashguards use a blend of polyester and spandex.

Polyester provides strength, shape retention and moisture management, while spandex gives the garment flexibility. Together, these materials create the four-way stretch needed for grappling.

When evaluating the fabric, look for:

• Four-way stretch

• Smooth, comfortable texture

• Strong shape retention

• Moisture-wicking performance

• Enough thickness to avoid becoming transparent when stretched

The fabric should move with your body and return to its original shape after training and washing.

Short Sleeve or Long Sleeve?

Both short-sleeve and long-sleeve rashguards can work well for Brazilian Jiu-Jitsu.

Short-Sleeve Rashguards

Short sleeves can feel cooler in hot or humid conditions. They are a practical option for intense No-Gi sessions and training in tropical locations such as Phuket.

Long-Sleeve Rashguards

Long sleeves offer more skin coverage and reduce direct contact between your arms and the mats. Some practitioners also prefer them underneath a Gi.

The best option depends on your comfort, training environment and personal preference.

Check the Seams and Construction

BJJ places significant pressure on clothing. Rashguards are repeatedly stretched, pulled and rubbed against the mats, so construction matters.

Look for strong, reinforced seams that sit comfortably against the skin. Flat seams can help reduce irritation during longer sessions.

Also inspect the collar, sleeves and lower hem. These areas should maintain their shape without feeling excessively tight.

A longer body cut or secure lower hem can help keep the rashguard from riding up while you roll.

Choose a Design That Fits Your Training

Your rashguard should perform well, but its design can also represent your personality and connection to Jiu-Jitsu culture.

Some practitioners prefer a clean, minimal rashguard, while others choose bold artwork and collection designs.

For competitions, always check the organiser’s current uniform requirements before selecting a colour or design. Competition rules may differ from normal academy training rules.

How to Care for Your Rashguard

Correct washing helps maintain the fabric, elasticity and print.

After training:

• Wash the rashguard as soon as reasonably possible

• Use cold or cool water

• Turn it inside out before washing

• Use a mild detergent

• Allow it to air-dry

• Avoid bleach and high-temperature drying

• Never leave a wet rashguard inside your training bag overnight

Always follow the specific care instructions supplied with the product.

Final Checklist

Before purchasing a BJJ rashguard, confirm that it offers:

• A close but comfortable fit

• Unrestricted shoulder and torso movement

• Four-way stretch

• Durable construction

• Comfortable seams

• Appropriate sleeve length

• A size supported by accurate measurements

• A design you feel confident wearing

The right rashguard should allow you to focus on technique and training—not constantly adjusting your equipment.

BJJLIFESTYLE creates Brazilian Jiu-Jitsu gear for practitioners who live the sport on and off the mats. Designed and developed in Phuket, Thailand, our rashguards combine performance, comfort and authentic BJJ culture.

Ready to find your next training rashguard? Explore the WHERE FEAR ENDS Collection →