Diamond MMA: BJJ


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Compression Brief
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Diamond MMA | Quad Strap System | Quad Strap Jock and Athletic Cup

A groin protector, or cup, is an important piece of equipment for any grappler. 

Though striking is not allowed in BJJ, accidental low blows can and do happen, so it's important to be protected.

IBJJF Rule 8.3.7 states, in part: “Use of any foot gear, headgear, hair pins, jewelry, cups (genital protectors), or any other protector fashioned of hard material that may cause harm to an opponent or the athlete him/herself is forbidden.”

There are many benefits to wearing a groin protector during training, even though it is not allowed in competition. Wearing a cup during training can help you avoid injuries from low blows and protect your training partners from any accidental pain. Plus, few people will complain about your cup if you're not using it to cause pain. In short, there's no reason not to wear a cup during training, even though it isn't allowed in competition.

Product features

youth leagues

Cups are required by many youth leagues. 

Avoid the fight and get the cup system that is comfortable enough that your son won't argue when it's time to put it on. 

zero shifting

Our patented quad-strap system acts like suspenders, keeping the cup in place against your body without movement even when running, squatting, and moving at all angles. 


Our compression brief sport underwear is so comfortable that you'll want to wear it from the gym and forget you're ever wearing it. 

Performance short with 

built-in jock

Performance boxer with 

built-in brief


Moisture Control

Soft feel

4-way stretch

Odor control

No roll waistband


We're confident we design and sell the very best groin protection available at any price, and we want you to share our confidence! That's why we back every sale with a 100% satisfaction guarantee.

If you don't like the product, if it just doesn't work for you, if it doesn't fit, contact us and we'll make it right. 

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