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32 reviews

Foundation Rash Guard

Our flagship ranked Jiu Jitsu rash guard. Match with your belt rank, choose from short or long sleeve. Approved for IBJJF competition.

Size
Color
White
Blue
Purple
Brown
Black
Red
Sleeve Length

Pair with our Fight Shorts and a base layer of Spats or Compression Shorts for the ultimate No-Gi uniform.

Unrivaled Comfort

We use buttery smooth flatlock stitching that doesn't itch and irritate.

Slightly extended cut means that your rash guard won't ride up while you roll.

Ventilated mesh armpit vents allow you to get through the toughest training rounds without overheating.

Built to Last

Sublimated graphics won't fade or peel as you roll or wash your rash guard.

Backed by the Gold BJJ Guarantee: if you don't love your Foundation Rashguard, let us know and we'll replace or refund your order.

IBJJF Legal

Competition rules require that you wear a rash guard with at least 10% of your belt rank.

Don't get DQ'd for wearing an illegal uniform. Our Foundation rash guard has been specifically designed to meet all Jiu Jitsu tournament requirements.

We proudly back all of our products by the Gold BJJ Guarantee.

If for any reason you're not thrilled with your purchase, we'll replace or refund your order no-questions-asked.

Customer Reviews
4.6 Based on 32 Reviews
5 ★
78% 
25
4 ★
9% 
3
3 ★
9% 
3
2 ★
3% 
1
1 ★
0% 
0
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Filter Reviews:
    CL
    03/17/2023
    Chisom L.
    United States United States

    Rash guard

    The foundation rash guard runs quite small, not ideal for stocky muscular builds. Would love to have purchased a size or 2 larger.

    K
    03/09/2023
    Kevin
    United States United States

    Size up

    The rash guards are great quality overall, I'd just recommend sizing up. I'm 6ft and 175-180lbs and the large is extremely tight.

    GW
    02/24/2023
    Gregory W.
    United States United States

    Beautiful products, but a very tight fitting rash guard

    The website is fantastic. The rash guard is not a good fit. I wear clothing in Large and XL. I bought a size XL rash guard and it is incredibly tight. It makes me feel like I need a XXL or XXXL to fit properly.

    JG
    02/17/2023
    Joey G.
    United States United States

    Love it!

    Perfect fit and wonderful customer service! Thank you!

    NS
    01/19/2023
    nathan s.
    United States United States

    Review of large foundation rash guard received

    Hello, unfortunately the rash guard is smaller than the medium I bought in the past even though it’s a large. I unfortunately can’t even wear it because it’s to skinny. I’m not sure if it’s supposed to be a large in children’s instead of adults.