What is a Rash Guard and why are they used in BJJ and MMA?


What Is a Rash Guard and why are they used in BJJ and MMA?

A Rashguard is a specialised piece of clothing designed to be worn during BJJ, MMA or any other type of grappling training and competition. It is typically made from high-quality, moisture-wicking, and breathable fabric like polyester or a blend of polyester and spandex. These materials are chosen for their ability to manage sweat and provide a comfortable fit. They are either worn when practicing No Gi grappling/ No gi training or are also worn underneath the BJJ GI.

Key Features of a BJJ Rash Guard:

  1. Compression Fit: BJJ rash guards are designed to have a tight, compression fit. This skin tight fit serves several purposes, including muscle support, reducing the risk of skin-to-skin friction and enhancing blood circulation.

  2. Hygiene: BJJ is a close contact sport so the wearers find themselves in direct skin to skin contact with their training partners. Rash guards act as a barrier, reducing the risk of skin infections and the transmission of bacteria.

  3. Durability: BJJ rash guards are designed to withstand the intensity of training which includes friction from the mat and constant stretching and pulling.

Benefits of Wearing a Rash Guard for Brazilian Jiu Jitsu:

  1. Prevents Skin Irritation: The tight fit of a rash guard reduces friction between your skin and the mat or your opponent as your chest and arms are covered this helps to minimise the chances of developing skin irritations and mat burns. They are also available in both long sleeve and short versions.

  2. Protection from Infections: By acting as a protective layer a rash guard helps prevent the spread of infections, such as ringworm and staph, which can easily be transmitted through skin-to-skin contact.

  3. Temperature Regulation: Rash guards can help regulate body temperature vs a regular cotton tshirt as they are much thinner and lighter keeping you cool in hot conditions and providing an extra layer of insulation in colder environments.

  4. Enhanced Performance: The compression fit of a rash guard supports muscles, reducing muscle fatigue and improving endurance. It can also make it harder for opponents to grip your clothing during sparring or competition.

  5. Style and Identity: Rash guards come in a variety of designs and colours, allowing the user to express their personal style and represent their gyms. You can even get your own custom rashguards.


A rash guard in Brazilian Jiu Jitsu and MMA is much more than just a piece of clothing. It's a essential piece of training clothing that enhances comfort, hygiene, and performance for athletes of all levels. This could be for NO GI grappling or underneath the BJJ GI. Whether you're a beginner or a seasoned black belt purchasing a BJJ rash guard will be at the top of your gear list. Not only will it keep you comfortable and protected on the mat, but it also allows you to showcase your unique style and identity in the vibrant BJJ community. So next time you step onto the mat be sure to be kitted out in the latest rash guard for a more enjoyable training experience. Ive also known then used for other actives such as surfing, swimming, diving or even at the beach as they offer UV protection. They are used as a swim shirt as they are very quick drying.

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