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28 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
4.7 Based on 28 Reviews
5 ★
82% 
23
4 ★
7% 
2
3 ★
7% 
2
2 ★
4% 
1
1 ★
0% 
0
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Filter Reviews:
    NS
    01/19/2023
    nathan s.
    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.

    CB
    01/01/2023
    Christopher B.
    Canada Canada

    Careful with sizing

    Order shipped quickly, material is excellent, but the sizing chart (specifically for rash guards) is not accurate. My rash guard barely fits and I can't move freely in it. Apparently this is a common issue with rash guards generally, but I was unaware of it while purchasing. The rest of my order was sized perfectly according to the guide provided.

    DH
    11/11/2022
    Dustin H.
    United States United States

    Duh best

    LS rashguard sleeve length is actually nice and long. Ideal for my long arms. Sizing slightly inconsistent between color variations but worth keeping b/c the arm pit venting is so legit.

    DH
    10/29/2022
    Dustin H.
    United States United States

    Barely notice

    LS Rash guard fits better than the tighter fitting SS version of same size. Originally ordered size LARGE, way to tight. I’m 6ft 190 lbs. exchanged for XL much better fit.

    KY
    09/30/2022
    Kevin Y.
    United States United States

    Outstanding rash gaurd