Model in Stonebelt Foundry red rashguard with Built for War graphic and black Heritage grappling shorts, front view
Model in Stonebelt Foundry red rashguard and black Heritage grappling shorts, back view
Model in Stonebelt Foundry red rashguard and black Heritage shorts, left side angled view
Model in Stonebelt Foundry red rashguard and black Heritage shorts, right side angled view with shoulder logo
Stonebelt Foundry short sleeve BJJ rashguard in red and black, flat front view with Built for War spartan graphic
Stonebelt Foundry short sleeve BJJ rashguard in red and black, flat back view with Foundry Series shield graphic
 

Foundry Series Short Sleeve BJJ Rashguard — Deep Red | Stonebelt

39.99$ USD260 GSMPremium Fabric

Short sleeve BJJ rashguard built for practitioners who train with an edge and want gear that matches the intensity.

260 GSM Performance Fabric, heavier than most compression rashguards on the market. Holds its shape through hard rounds. No sag through the torso or shoulders. Flatlock stitching. Silicone waist grip. Deep red BJJ rashguard with full coverage Foundry Series graphics — built for hard rounds, built to last.

✔ Free first size exchange

Sizing Chart Here

Training rashguard — not IBJJF rankedThese are not intended as ranked IBJJF rashguards. More on this →
  • In stock — ships from Québec in 1–3 business days
  • Free first size exchange
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Built for real training Tested on the mats, not in photos
Real human support Answered by the people who make it
A Canadian BJJ brand built by practitioners — shipped from Québec
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Specifications

Fit Athletic Compression
Material 80% Polyester / 20% Spandex
Fabric Weight Premium 260 GSM
Seam Type Flatlock Stiching
Graphics Fully Sublimated Graphics
Waistband Silicone Waistband
Shipping weight .5 lbs

Fabric weight compared

A denser compression knit resists snagging and keeps its shape through hard rounds.

Budget rashguard 180 GSM
Typical rashguard 220 GSM
Stonebelt 260 GSM

FOUNDRY SERIES: THE DEEP RED BJJ RASHGUARD BUILT FOR WAR

The Foundry Series deep red BJJ rashguard is for the practitioner who trains with an edge, and wants gear that matches the mentality. Deep red.

Full coverage graphics. A Spartan helmet on the front and the Foundry Series badge on the back, because what gets forged under pressure is worth putting on display. This isn’t a minimal training tool. It’s a statement about how you approach the mat.

Under the graphics, it’s the same construction that Stonebelt practitioners rely on every session. Flatlock seams that disappear during hard rounds. Silicone waist grip that stays put through scrambles and transitions. 80/20 compression fabric that moves with the body and manages heat when the intensity spikes. The Foundry Series earns the look, it doesn’t just wear it.

If you’re going to go to war on the mat, you might as well look like it.

Key Features

  • 80% Polyester / 20% Spandex — durability, stretch, breathability
  • Flatlock Stitching — stays flat against skin through hard rounds, no irritation buildup
  • Permanent Sublimated Graphics — holds up wash after wash, season after season
  • Compression Athletic Fit — full mobility, moves with you not against you
  • Short Sleeve Design — ideal for no-gi and high-intensity training
  • Silicone Waist Grip — stays locked in through scrambles and transitions

Best for: BJJ No-Gi & Gi training, MMA & grappling, wrestling, strength & conditioning

Sizing Guide

Short sleeve rashguard sizing chart with bilingual measurement instructions.

The Stonebelt Foundry Series short sleeve BJJ rashguard is a light compression rashguard built for practitioners who want performance construction and bold graphics that hold up long term. For a minimal alternative, explore the Athletic Club Short Sleeve BJJ Rashguard. For longer sleeve coverage, explore the Stonebelt Heritage BJJ Gi for gi training sessions.

Learn more about Brazilian jiu-Jitsu

 

Model in Stonebelt Foundry red rashguard and black Heritage shorts, right side angled view with shoulder logo Stonebelt Foundry short sleeve BJJ rashguard in red and black, flat front view with Built for War spartan graphic Stonebelt Foundry short sleeve BJJ rashguard in red and black, flat back view with Foundry Series shield graphic

Common questions

Is this IBJJF approved?
No. This is not intended as a ranked IBJJF rashguard. It is built for training rather than to meet competition ranking requirements. If you compete, check the current IBJJF rulebook for what your division allows.
Will the graphics fade or peel?
No. The graphics are fully sublimated, which means the ink is bonded into the fabric rather than printed on top. There is nothing to crack or peel.
How should I wash it?
Cold wash, hang dry. Avoid fabric softener and the tumble dryer — both shorten the life of compression fabric.
Is it tight or loose?
Athletic compression fit. Snug against the body without restricting movement. Between sizes? Size up for a slightly looser feel.
What if I order the wrong size?
Your first size exchange is free. Unused, unwashed, in original packaging, within 14 days of delivery.
How long does shipping take?
Every item listed as available is physically in our inventory — no production delays. Orders ship from Québec within 1–3 business days.

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