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.
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.
$39.99 Size Guide
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.
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.
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.
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.
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.
Very stylish and well made BUT pay very close attention to the sizing. I wear a large in most every brand so I ordered an XL. I will actually need an XXL in this. The shorts fit true to size and are also great. Nothing wrong with the rashguard. It just fits like a second skin.
United StatesNot please I feel at they fit to tight I originally ordered an xl and then that was to tight reordered a xxl and the only thing that seemed to change was the length
United StatesGreat Rash guard, The concern I faced was the sizes of the shirt. I thought when buying an XL shirt it would fit like an XL or L (as do other BJJ rashguards) instead it fits like a Medium, The size chart does not reflect USA sizing nor does it reflect European sizing, its just different.
United StatesThis place always does an amazing job and has wonderful products
United KingdomTop quality product. Top service. Arrived in the UK in good time.
