Rashguard vs Compression Shirt: Which Is Better for BJJ?
A rashguard and a compression shirt look alike, and both fit close to the body. A rashguard is built for contact, with fabric and seams made to handle mat friction, grips and constant stretching. A compression shirt is built to support your muscles during running and lifting, and it usually fits tighter with thinner fabric. For regular BJJ training, a rashguard is the better choice, but a compression shirt works fine for your first few classes.
What is the difference between a rashguard and a compression shirt?
The two shirts come from different sports. Rashguards started in surfing, where they protected skin from board rash and sun. Grapplers picked them up because the same features protect against mat burn and scrapes.
Compression shirts come from running, lifting and team sports. They squeeze the muscles with steady pressure, and many athletes wear them as a base layer under a jersey or a looser shirt.
Plenty of brands blur the line. Some rashguards have a compression fit, and some compression shirts are tough enough for grappling. The real question is what a specific shirt was designed to handle.
How does the fit compare?
A rashguard fits snug, like a second skin. It sits flat against your chest and stomach without squeezing, and the hem stays at your waist when you raise your arms.
A compression shirt fits tighter. It presses on your muscles on purpose, and some people find that pressure uncomfortable through a full hour of rolling, especially around the chest when they're breathing hard.
Length matters too. Rashguards usually run a little longer in the body so they stay tucked during scrambles and inversions. Many compression shirts are cut for standing sports and ride up when you play guard.
How do the fabrics compare?
Both shirts use synthetic stretch fabric, usually polyester or nylon blended with spandex. The difference shows up in thickness and construction.
Rashguard fabric is usually a little heavier so it can take friction from the mat and pulling from a training partner. Compression fabric is often thinner and lighter so it can sit under other clothes. Some compression shirts add mesh panels for ventilation, and those panels tear easily when fingers catch them.
Which one has better seams?
Look at the seams before you buy either shirt for grappling. Good rashguards use flatlock seams, which lie flat against your skin and hold up to stretching in every direction. A raglan sleeve, where the seam runs from the collar to the underarm, keeps a seam off the top of your shoulder, where you carry weight in a lot of positions.
Compression shirts vary. Many use flatlock seams as well, but some use thinner stitching that pops when a partner grabs the sleeve and pulls hard.
Which is more durable for BJJ?
A rashguard usually lasts longer on the mats. Grappling asks a lot of a shirt. Partners grab the sleeves and collar, and the mat drags at the fabric every time you shrimp or scramble. Rashguards are designed for that kind of wear.
A compression shirt can survive it, but thinner fabric and mesh panels wear out faster under grips. The design on the shirt matters too. A logo printed on top of the fabric with a heat transfer can crack and peel after a few months of stretching and washing. A dye-sublimated design is dyed into the fabric, so it holds up. Read What Is Dye Sublimation? for how that process works.
For a full care routine, read How to Wash a Rashguard So It Lasts.
Does a rashguard resist grips better?
A snug rashguard gives your partner very little fabric to grab, and so does a compression shirt. Both are better than a loose t-shirt, which gets pulled over your head the first time someone takes your back.
The difference is what happens when someone does grab. Rashguard fabric is built to stretch and recover. Thin compression fabric can stretch out or tear, and once it loses its shape it bunches and gives your partner more to hold.
Can you wear a compression shirt to BJJ?
Yes, in most gyms you can wear a compression shirt to a no-gi class or under a gi jacket. It's a good option for your first few weeks if you already own one. Make sure it's long enough to stay tucked, and leave any shirt with zippers or hard logos at home.
Some gyms ask for a rashguard specifically, and some no-gi tournaments set rules on sleeve length, color and coverage. Check with your coach or your tournament's uniform rules. Once you know you'll keep training, a rashguard is worth the switch.
When should you choose each one?
Choose a rashguard for BJJ, wrestling, MMA and other sports where you grapple. It handles grips and mat friction, and it stays tucked through daily training.
Choose a compression shirt for running, lifting and conditioning, or as a base layer in cold weather. Many grapplers keep one for strength days and save their rashguards for the mats.
If you only want to buy one shirt for jiu-jitsu, buy the rashguard. Our guide on how to choose a rashguard walks through fit, sleeve length and fabric so you get the right one the first time.
Which Pressure Point rashguard should you pick?
Both of our rashguards use raglan sleeves, and both designs are dye-sublimated, so they won't crack or peel.
- The Kuzushi Pulse Rashguard ($45) is a short sleeve rashguard cut light, so it moves fast and stays cool when the room heats up. It's made from a breathable poly-knit fabric, and it stays close through hard sessions without restricting your shoulders. It comes in men's S to XL and women's S to L.
- The Positional Pressure Long Sleeve Rashguard ($45) is unisex and made from 80% polyester and 20% spandex. It covers your forearms from mat burn, and pressure points appear where contact was made and fade as you recover. It comes in S to XL.
The Kuzushi Kit ($80) pairs the Pulse Rashguard with the matching Kuzushi Fight Shorts for a full no-gi set.
Pressure is a privilege, so put it on.
