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85 reviews

Foundation Rash Guard

Size Guide
Rash Guard Size Chart

Gold BJJ Rash Guard Size Chart

All of our rash guards follow the same size chart. Please find your waist size below to select the best fit. Our rash guards are designed to fit tight. If you're not sure about the best size or would like a looser fit, please size up.

Size Weight

XS

95lbs to 115lbs

S

105lbs to 130lbs

M

125lbs to 165lbs

L

155lbs to 175lbs

XL

170lbs to 195lbs

XXL

185lbs to 230lbs

XXXL

230lbs and up

Not sure if you're choosing the right size? We get it, Jiu Jitsu gear sizing can be tricky. That's why we offer totally free pre-paid returns.

Rash Guard Size Chart

Gold BJJ Rash Guard Size Chart

All of our rash guards follow the same size chart. Please find your waist size below to select the best fit. Our rash guards are designed to fit tight. If you're not sure about the best size or would like a looser fit, please size up.

Size Weight

XS

95lbs to 115lbs

S

105lbs to 130lbs

M

125lbs to 165lbs

L

155lbs to 175lbs

XL

170lbs to 195lbs

XXL

185lbs to 230lbs

XXXL

230lbs and up

Not sure if you're choosing the right size? We get it, Jiu Jitsu gear sizing can be tricky. That's why we offer totally free pre-paid returns.

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

Ships Today from San Diego • Free Returns

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.

Customer Reviews
4.6 Based on 85 Reviews
5 ★
78% 
66
4 ★
13% 
11
3 ★
6% 
5
2 ★
3% 
3
1 ★
0% 
0
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Filter Reviews:
    F
    05/20/2024
    Francisco SVG verified by SHOP
    United States United States

    My son loves the rash guard. Says it’s really comfortable, breathable and felt very cool throughout his rolls.

    RG
    05/17/2024
    Richard G.
    United States United States

    Disappointed but customer service was responsive

    Ordered a L rash guard on a Monday received it on a Friday, reached out about returning it for a size up. was given a 50% off discount code and reordered that next day, now it won’t be here until the 20th. I have a pro grappling match I bought it for on the 19th. Nothing bad to say about the product, but i spent 70$ and won’t be able to use it for when I needed it. Customer service was solid.

    PE
    05/11/2024
    Phinas e.
    United States United States

    Thanks!

    Boss gear guys. Hands down best rash guards I’ve ever had!

    JM
    05/11/2024
    Joseph M.
    United States United States

    Awesome

    Awesome purchase. Quality construction, and the vented under arms help keep me cool while rolling. Easily my favorite rash guard now. I originally ordered a medium, and as many others have said, the sizing is off. That being said, the customer service was amazing. I sized up to a large and all is well. Could’ve maybe went XL, but the L works.

    PV
    05/06/2024
    Patrick V.
    United States

    I love their gear.

    Absolutely fantastic products and customer service. I have returned for more gear and will continue.