View on LOZ Suggested Retail: $100. Diamond MMA Compression Short Built-in Jock Strap & Athletic Cup Groin Protection System. The Diamond MMA Compression Jock & Cup System is a groin protector designed for high impact sport competitors and is the leader with professional athletes. Made from the best materials available, the Quad Strap Jock & Cup System is a unique system specially designed to hold the jock cup firmly in place at all time with maximum comfort. The Diamond MMA Cup incorporates a co-molded elastomer design coupled with a polycarbonate core to provide uncompromising comfort and protection for the athlete. Sizing Waist in Inches Small 27''- 30'''' (68-76cm) Medium 31'' - 34'''' (77-86cm), Large 35'' - 35'' (87-96 cm), X Large 39''- 42'' (97-106cm), XX-Large 43''- 48'' (107-122cm) Your Diamonds are made to fit tight but comfortable. If you are thicker in the thighs and/or seat, go up a size. The product comes in a combination of black and blue colors.. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.