Compression Jock Shorts
A compression jock short with four straps that hold the athletic cup snug against your body while you run, slide, skate and grapple.
Shift-proof quad strap design keeps the cup locked in place
Athletic cup: polycarbonate shell with a soft elastomer rim (SOLD SEPARATELY)
Free U.S. shipping on orders over $175. Ground, 2-Day and Overnight options at checkout.
30-day returns and free exchanges. Add Checkout+ at checkout for free returns and package protection.
Lifetime warranty on the athletic cup.
Short size guide
Measure around your natural waist, just above the hips. Don’t go by pant size.
| Size | Waist | Weight (approx.) |
|---|---|---|
| Small | 28–30" | 120–150 lb |
| Medium | 30–32" | 140–170 lb |
| Large | 32–34" | 160–190 lb |
| X Large | 34–36" | 180–220 lb |
| 2XL | 36–40" | 210–260 lb |
| 3XL | 41–44" | 250–300 lb |
| Size | Age | Waist |
|---|---|---|
| Youth Medium | 8–10 | 22–24" |
| Youth Large | 10–12 | 24–26" |
| Youth X Large | 12–14 | 26–29" |
Made for a snug, supportive fit. Between sizes? Athletes with bigger thighs or glutes usually size up. Leaner builds may like the smaller size. Adult sizes have a drawstring waistband. Youth sizes do not. Full size chart
Cup size guide
| Cup | Length | Width | Depth |
|---|---|---|---|
| Youth | 5.5" | 3" | 2" |
| Adult | 6.75" | 4" | 2.25" |
Most athletes move to the adult cup and adult sizes around age 12, depending on build.
Description
COMPLETE GROIN PROTECTIVE GEAR
The Diamond MMA Compression Short is an innovative and high-performance solution for athletes who demand the best in protection and support. This system is designed to provide superior groin protection so you can focus on your game with complete confidence.
PREMIUM HIGH QUALITY
The Diamond MMA Compression Jock Short provides the ultimate groin protection for high-impact sports athletes. The patented four-strap design acts like suspenders to create tension to keep your cup flush against your body while moving. ZERO SHIFTING, GUARANTEED. Made from military-grade elastics and premium construction, prevents both lateral and vertical movement of the cup allowing for free movement, while still providing complete protection and comfort.
The compression shorts are made from high-quality materials and feature a moisture-wicking fabric that keeps you cool and dry, even during the most intense workouts. The flatlock seams reduce chafing and irritation, while the wide waistband provides added support and the included drawstring ensures a perfect fit.
ERGONOMICALLY DESIGNED
Engineered to offer optimum protection during high-impact sports, Diamond MMA High-Performance Athletic Cup is crafted with a custom-designed geometry that allows it to deflect and distribute forces. Its core is made of polycarbonate - a material also used in bulletproof glass - and a proprietary blend of copolymer absorbs any impact received. Furthermore, its soft elastomer edge minimizes vibration as well as reduces chafing or rubbing on sensitive groin muscles and nerves. With direct hits taken to your most sensitive area easily absorbed, you can continue playing worry-free with no recovery time needed.
Designed by award-winning designers and Stanford University engineers, this system has been approved by doctors and urologists as the best groin protection on the market. Diamond MMA products are used by professional athletes worldwide without sponsorships.
What’s included
Compression Jock Short plus a High Performance Athletic Cup (adult or youth). Choose “Without Cup” for the jock short only. 2pk and 3pk add extra jock shorts, not extra cups.
Shipping & returns
Orders are processed and shipped within 1–3 business days. We don’t ship on weekends or major U.S. holidays, so a Friday order usually ships the following Tuesday. Delivery time starts once your order ships. See our full shipping policy →
- Shipping is calculated at checkout, with Ground, 2-Day and Overnight options.
- Free shipping on U.S. orders over $175.
- Returns are accepted within 30 days of delivery, even on worn or used gear.
- Exchanges are free on every order.
- Add Checkout+ at checkout for free returns and package protection.
- Refunds go to your original payment method or store credit, your choice. Allow 5–7 business days once we receive the return.
- Shipping fees aren’t refundable once an order ships.
Size chart & fit guide
Diamond MMA Size Chart
Size every Diamond MMA jock, short and brief by your waist, measured just above the hips. Not your pant size. Athletic cups come in Youth and Adult, and most athletes move to the adult cup around ages 14 to 15.
Start here
How do I measure for a jock or compression short?
It takes about a minute with a soft tape measure.
Find your natural waist
It's just above your hip bones, usually a little above your belly button.
Measure around
Wrap the tape around your body, level and snug, but not tight. Don't go by your pant size.
Match the chart
Find your waist in the chart for your product. Weight ranges are there to help if you're on the line.
Athletic cups
What size athletic cup do I need?
Our athletic cup comes in two sizes. Both use the same polycarbonate shell and soft rubber elastomer rim. Pick the one that covers fully without pinching at the edges.
| Cup | Length | Width | Depth |
|---|---|---|---|
| Youth | 5.5" | 3" | 2" |
| Adult | 6.75" | 4" | 2.25" |
When to move up: most athletes move from the youth cup to the adult cup around ages 14 to 15, depending on body type. If the youth cup no longer covers everything, it's time.
Adult
Quad Strap Jock & Compression Jock Short size chart
Built for a snug, supportive fit. Adult sizes have a drawstring waistband.
| Size | Waist | Weight (approx.) |
|---|---|---|
| Small | 28–30" | 120–150 lb |
| Medium | 30–32" | 140–170 lb |
| Large | 32–34" | 160–190 lb |
| X Large | 34–36" | 180–220 lb |
| 2XL | 36–40" | 210–260 lb |
| 3XL | 41–44" | 250–300 lb |
Fits: Quad Strap Jock System · Quad Strap Jock · Compression Jock Short System · Compression Jock Shorts
Youth
Youth jock & compression short size chart
Youth sizes don't have a drawstring, so measure carefully. Outgrown Youth X Large? Move to adult Small.
| Size | Age (approx.) | Waist |
|---|---|---|
| Youth Medium | 8–10 | 22–24" |
| Youth Large | 10–12 | 24–26" |
| Youth X Large | 12–14 | 26–29" |
Fits: Youth Quad Strap Jock System · Youth Compression Jock & Athletic Cup System · Youth Compression Jock Short System | White
Hockey
Hockey jock short, garter & jock pant size chart
Our hockey line runs Small to 2XL. Between sizes, or thicker in the thighs or seat? Go up a size.
| Size | Waist | Weight (approx.) |
|---|---|---|
| Small | 28–30" | 120–150 lb |
| Medium | 30–32" | 140–170 lb |
| Large | 32–34" | 160–190 lb |
| X Large | 34–36" | 180–220 lb |
| 2XL | 36–40" | 210–260 lb |
Fits: 3 in 1 Hockey Garter Belt · Hockey Jock Short System · Hockey Jock Short · Cut-Resistant Hockey Jock Short System · Cut-Resistant Hockey Jock Pant System
Performance Short
Performance Short size chart
The Performance Short runs on its own chart, Small to X Large, for both the built-in jock and built-in brief versions. The waistband has a drawstring.
| Size | Waist | Weight (approx.) |
|---|---|---|
| Small | 28–30" | 140–170 lb |
| Medium | 31–33" | 170–200 lb |
| Large | 34–36" | 200–230 lb |
| X Large | 37–40" | 230–270 lb |
Fits: Performance Short With Built-In Jock System · Performance Short With Built-In Jock · Performance Short With Built In Brief
Briefs
Compression Brief & Sports Boxer Brief size chart
Both briefs share one chart. They're made for support on days you don't need a cup. Size down for more compression, or size up for a more relaxed everyday fit.
| Size | Waist | Weight (approx.) |
|---|---|---|
| Small | 28–30" | 130–155 lb |
| Medium | 31–33" | 155–185 lb |
| Large | 34–36" | 185–215 lb |
| X Large | 37–40" | 215–250 lb |
| 2XL | 41–44" | 250–290 lb |
Fits: Compression Brief · Sports Boxer Brief
Fit tips
Between sizes?
Bigger thighs or glutes
Size up. The quad straps and leg openings will sit more comfortably.
Leaner build
Take the smaller size for a closer fit that holds the cup tighter.
Wrong size?
Exchanges are free on every order. Start one in the returns portal.
Apparel
Rash guard & T-shirt size charts
Questions
Sizing questions
How should an athletic cup fit?
It should cover everything, sit flat against your body and stay put when you run or squat. If it gaps at the edges or pinches, try the other size.
Should I go by my pant size?
No. Measure around your natural waist, just above the hips. Pant sizes vary by brand and usually sit lower on the body.
When should a youth athlete move to the adult cup?
Most athletes move from the youth cup to the adult cup around ages 14 to 15, depending on body type. If the youth cup no longer covers everything, it's time to size up.
Can I get a youth cup with an adult jock?
Yes. Our adult Systems let you choose the adult or youth cup, which works well for teens and smaller-framed athletes.
What if I'm between sizes?
Athletes with bigger thighs or glutes usually size up. Leaner builds may like the smaller size for a closer fit. Exchanges are free if you need to swap.
What if it doesn't fit?
Exchanges are free on every order. You can also return it within 30 days of delivery. Start through our returns portal.
Still not sure?
Answer a few questions and we'll match you to the right jock, cup and size for your sport. Or email info@diamondmma.com and our team will help.
Product details
-
Description
Four strategically placed straps hold the cup snug against your body. The straps act like suspenders, adding tension that helps keep the cup snug against the body. Less adjusting. Fewer distractions.
The short uses moisture-wicking fabric to keep you cool and dry, flatlock seams to cut down on chafing, and a wide waistband. Adult sizes add a drawstring for a dialed-in fit. Youth sizes don’t have a drawstring.
-
Materials & care
Short fabric: 84% nylon, 16% spandex jersey
Straps: 1" military-grade elastic
Waistband: 2" plush knit logo elastic
Leg hems: Flat rubber elastic inside the leg openings
Seams: Flatlock
Care: Machine wash cold. You can leave the cup in the jock’s pouch and air dry both, or wash the cup by hand.
-
Warranty
Every Diamond MMA athletic cup has a lifetime warranty. Every other Diamond MMA product, including the jock short, has a 30-day warranty.
Problem with your gear? Fill out the Warranty Claim Form.
How does a compression jock keep a cup from shifting?
Most compression jock shorts just have a cup pouch, which leaves the cup floating around. The Diamond MMA Compression Jock Short has a cup pocket tailor-fit to the Diamond MMA cup, plus four straps that pull that pocket tight from four directions. That tension helps keep the cup snug against the body when you sprint, change direction, slide or hit the mat. The athlete should be thinking about the game, not adjusting their cup.
Protective gear helps reduce risk but can’t prevent every injury. Safety & product disclaimer
Built to stay in place through every play
-
Shift-proof quad strap design
Patented four-strap stabilization helps keep the cup centered and secure, so you’re not stopping to fix it mid-game.
-
Tailor-fit cup pocket
The pocket is cut to fit the Diamond MMA cup, so there’s no extra room for it to slide around.
-
Athletic cup protection
A polycarbonate shell with a rubber elastomer rim. The shape helps deflect and spread the force of a hit. Lifetime warranty on the cup.
-
One system, every sport
Baseball, football, lacrosse, wrestling and combat sports. Adult and youth sizes, so the whole team gets the same locked-in fit.
Frequently asked questions
Which should I get: the Quad Strap Jock, Compression Jock Short or Performance Short?
All three use the same four-strap design and tailor-fit cup pocket. The difference is what’s built around the jock.
Quad Strap Jock: A traditional jock strap you wear under your own shorts, pants, or uniform.
Compression Jock Short: The Quad Strap Jock with a compression short built around it. The two front straps sit inside the short, and the two back straps are built into the short. It ends about mid-thigh.
Performance Short With Built-In Jock: Made to wear as your outer short. All four straps are inside, and it ends just above the knee.
What size compression jock short should I get?
Measure around your natural waist, just above the hips, and match it to the size guide. Adult sizes run Small (28–30") to 3XL (41–44"). Between sizes with bigger thighs or glutes? Size up.
Should my kid wear a youth or adult cup?
The youth cup is 5.5" long, 3" wide and 2" deep. The adult cup is 6.75" long, 4" wide and 2.25" deep. Most athletes move to adult sizes around age 12, depending on build.
Can I wash the jock with the cup inside?
Yes. Machine wash the jock in cold water with the cup left in the pouch, then air dry both. You can also wash the cup by hand.
Do the 2pk and 3pk come with extra cups?
No. Multipacks add extra jock shorts. You get one cup with the system.
How much is shipping?
Shipping is calculated at checkout, with Ground, 2-Day and Overnight options. U.S. orders over $175 ship free.
What if it doesn’t fit?
Exchanges are free, so you can swap for the right size. You can also return it within 30 days of delivery, even if you’ve worn it. Add Checkout+ at checkout for free returns and package protection.
What does the warranty cover?
The athletic cup has a lifetime warranty. Every other Diamond MMA product, including the jock short, has a 30-day warranty. Fill out the Warranty Claim Form if you have a problem.
-
Compression Jock Short System | Black
From $97.00( / ) -
From $52.00( / ) -
Performance Short With Built-In Jock System
From $141.00( / ) -
From $52.00( / ) -
$60.00( / ) -
From $104.00( / ) -
Youth Quad Strap Jock Strap System
From $52.00( / ) -
Compression Jock Short System | White
From $97.00( / )
