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Quad Strap Jock Starter Pack


  • Strongman T-Shirt

  • Quad Strap Jock

  • High Performance Athletic Cup

Quad Strap Jock Starter Pack


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. 

sizing charts

Quad Strap Jock

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)


Small28" (71 cm)18" (46 cm)
Medium29" (74 cm)20" (51 cm)
Large30" (76 cm)22" (56 cm)
X Large31" (79 cm)24" (61 cm)
XX Large

32" (81 cm)

26" (66 cm)

XXX Large

33" (84 cm)

28" (71 cm)

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


Machine wash cold.Non-chlorine bleach, when needed.Tumble dry medium.

return info

If you have any issues, please email 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 5 reviews
Vast improvement

I was using a different name brand cup. It was uncomfortable and didn’t do the best at providing protection. The diamond is a vast improvement over what I had. Feels much more secure, much better fitting, and better protection. The quad jock is good but I’ll be upgrading the compression short soon I hope

Great protection, comfortable, stays where

Great protection, comfortable, stays where you put it. No need for constant adjustment

Great Quality

Definitely does the job staying in place and absorbing the wild knee to the privates. Great work Diamond!

Quad Strap Jock & Athletic Cup

Fit and Quality are top shelf. Will not use another brand after wearing these. If you haven’t tried one, you owe it to yourself

Well designed for combat sport

Much better drain for combat sport than others I’ve used. The cup stays put and protects better against the “in and up” motion of a straight kick to the plums.