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Quad Strap Jock

zero shifting. guaranteed. 

  • Patented four strap design acts like suspenders to create tension to keep your cup flush against your body while moving

  • For additional security, includes a drawstring which can be used to tighten the waistband to your liking

  • Gives you the green light to go all out in your sport without fear of groin injuries

Diamond MMA | Quad Strap System | Quad Strap Jock and Athletic Cup
Quad Strap JockQuad Strap JockQuad Strap JockQuad Strap Jock

“This is by far the best groin protection system I have ever used. I have already been tested (not on purpose) numerous times and from different angles. Little to no pain on shots that would have brought me to my knees with my previous protection system. My only regret is that I did not make this purchase sooner. I am already preaching the value of the investment to my teammates and they all are aiming to make this purchase soon. I am a mixed martial artist that studies all martial arts systems. Thank you Diamond MMA.” -Customer Eric P.


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 usand we'll make it right. 

bundles that include the quad strap jock

watch the jock system in action below:

  • What makes Diamond MMA's jock so much better?

Protection You Can Trust

Backed by a 100% satisfaction guarantee, you can trust that if you don't love it, you'll be taken care of. Plus, if you don't trust us you should trust the hundreds of positive reviews all over the web and professional athletes wearing and talking about our products. 

Superior Materials

We've literally spent years engineering our products and are still tweaking our designs to ensure our jock is always the best it can be and the best on the market. We are constantly sourcing materials to ensure our products are made with the best materials out there. 

Focus on Comfort

Obviously protection matters. But so does your comfort. The reason so many guys don't wear a cup system is because it's simply uncomfortable. We designed a cup and corresponding jock system that is so comfortable you'll forget you're wearing it. 

Designed By Experts

Designed by a team of award winning designers, Stanford University engineers, and most importantly, athletes practicing in the sport testing the products day in and day out. 

sizing chart

SizeWaist Size
Small27-30" (68-76 cm)
Medium31-34" (77-86 cm)
Large35-38" (87-96 cm)
X Large39-42" (97-106 cm)
XX Large43-48" (107-122 cm)

For any additional questions, please feel free to call us at 888-959-1662 or email us at info@diamondmma.com


Your jock can be machine washed, but should be hung dried. Your cup can be left in the cup pocket of your jock while it is washed. 

return info

If you have any issues, please contact us at info@diamondmma.com and we'll work with you to make it right. 


For any additional questions, please feel free to call us at 888-959-1662 or email us at info@diamondmma.com.

Shipping Info

You can view a shipping estimate by adding items to your cart and going to the cart page, you will see all available shipping options and pricing there. 

Orders are shipped from our warehouse in Northbrook, IL. 

 There can be a 2-3 business day handling time before orders ship, so please plan accordingly when choosing your shipping method. 

Carrier calculated shipping rates are available at checkout which enable you to choose the speed you need to receive your product in. 

 A Note On International Shipments:

We try to make sure all duties and fees are paid from our end but some countries impose additional duties on product at the time of import. You are responsible for all additional taxes and duties levied on your order once it arrives in your country. 

Please note that first class international shipping does not have a guaranteed delivery time frame. Depending on the location shipments can take up to 4-6 weeks and tracking the shipment can have limited abilites. 

Customer Reviews

Based on 52 reviews

Quad Strap Jock


Let my girlfriend kick me in the nuts barley felt it. Best cup I’ve ever had hands down

Most comfortable athletic cup

Skeptical this cup would be much different even with the significant price difference but if I've learned anything in life, it's "you get what you pay for", unless you are used to getting scammed. First wear of this cup was noticeably more comfortable than any other cup I've worn. First time wearing during BJJ training session I never had to adjust and actually felt like i wasnt even wearing a cup. I would definitely buy this cup again and will when my children need an athletic cup.

Jits practitioner -size medium

Great shield for the package, stays in place well.

Excellent quality

I can't imagine these products being any better. Excellent fit, comfort and quality. A lifetime guarantee on the cup and they honor it. Great customer service too. Thanks Diamond MMA for protecting me.