Youth Quad Strap Jock Strap System
A youth jock strap with four straps that hold the athletic cup snug against the body through every sprint, slide and tackle. Your athlete wears it under their own shorts, pants or uniform.
Shift-proof quad strap design keeps the cup locked in place
Youth athletic cup: polycarbonate shell with a soft elastomer rim
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.
Jock size guide
Measure around your athlete’s natural waist, just above the hips. Don’t go by pant size.
| Size | Age (approx.) | Waist |
|---|---|---|
| Youth Medium | 8–10 | 22–24" |
| Youth Large | 10–12 | 24–26" |
| Youth X Large | 12–14 | 26–29" |
Made to fit snug. Between sizes or thicker in the thighs or seat? Go up a size. Outgrown Youth X Large? See the Quad Strap Jock System in adult sizes. 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
Shift-Proof Groin Protection for Young Athletes
Patented Quad Strap System. Zero Shifting. Guaranteed.
The Diamond MMA Youth Quad Strap Jock Strap System delivers shift-proof groin protection trusted by professional athletes—adapted specifically for youth.
Our patented 4-strap system keeps the athletic cup securely in place through every play, so young athletes stay protected and focused.
No shifting. No adjusting. No distractions.
- Designed specifically for youth athletes
- Choose with or without athletic cup
- Ideal for baseball, lacrosse, football, MMA & more
- Secure, supportive fit for high-impact sports
PROTECTION PARENTS CAN TRUST
When it comes to your athlete, protection isn’t optional.
Traditional jocks and compression shorts often allow the cup to shift out of place—leaving athletes exposed at the worst moments.
The Diamond MMA patented quad-strap system eliminates that risk by delivering true shift-proof groin protection, keeping the cup locked in position throughout games, practices, and training.
It’s the same system trusted by professionals—built for youth.
SHIFT-PROOF GROIN PROTECTION — GUARANTEED
Most groin injuries happen because the cup moves.
Our quad-strap design acts like internal suspenders, creating tension that holds the cup snug and secure against the body—preventing both vertical and lateral movement.
- No shifting during running, sliding, or contact
- No mid-game adjustments
- Full freedom of movement
Once it’s on, it stays in place.
BUILT FOR EVERY SPORT
Designed for youth athletes across all high-impact sports:
- Baseball & Lacrosse – Protection from foul balls, checks, and contact
- Football – Reliable support under pads
- MMA & Combat Sports – Stays secure during grappling and movement
- Training & Multi-Sport Athletes – Consistent protection across all activities
ATHLETIC CUP OPTION
Choose with or without the Diamond MMA Athletic Cup.
For complete shift-proof groin protection, we recommend pairing the jock with the Diamond MMA Youth Athletic Cup—engineered to absorb and distribute impact while minimizing discomfort.
TRUSTED PERFORMANCE
Designed by award-winning designers and Stanford engineers.
Approved by doctors and urologists.
Worn by athletes at every level—from youth leagues to professionals.
What’s included
One Youth Quad Strap Jock plus a Youth High Performance Athletic Cup. Choose “Without Cup” for the jock only. 2pk and 3pk add extra jocks, 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
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Description
Four straps hold the cup snug against the body. Two go around the front of the legs and two sit just below the glutes, so the cup pocket is pulled tight from four directions. Less adjusting, so your athlete can focus on the game.
The pouch is a soft nylon-spandex jersey with flat seams, and the 2" waistband keeps it in place under baseball pants, football pants or shorts.
The youth cup’s polycarbonate shell and shaped geometry help deflect and spread the force of a hit, and the soft elastomer rim helps reduce rubbing.
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Materials & care
Pouch: 84% nylon, 16% spandex
Straps: Four elastic straps
Waistband: 2" plush knit logo elastic
Seams: Flat seams sewn with stretch thread
Cup: Polycarbonate shell with a rubber elastomer rim
Care: Machine wash cold. You can leave the cup in the jock’s pocket 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 youth jock strap keep a cup from shifting?
Most youth jocks rely on a pouch and a couple of leg straps, which leaves the cup room to move. The Diamond MMA Youth Quad Strap Jock has a cup pocket tailor-fit to the Diamond MMA youth cup, plus four straps that pull that pocket tight from four directions. That tension helps keep the cup snug against the body when your athlete sprints, slides, dives or makes contact.
Protective gear helps reduce risk but can’t prevent every injury.
Safety & product disclaimer
Built to stay in place through every play
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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.
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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.
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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.
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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
What size youth jock should I get?
Measure around your athlete’s natural waist, just above the hips, and match it to the size guide: Youth Medium 22–24" (about ages 8–10), Youth Large 24–26" (about 10–12), Youth X Large 26–29" (about 12–14). It fits snug by design. Between sizes or thicker in the thighs or seat? Size up.
Which should I get: the Youth Quad Strap Jock or the Youth Compression Jock Short?
Both use the same four-strap design and tailor-fit cup pocket. The Youth Quad Strap Jock is a traditional jock strap your athlete wears under their own shorts, pants or uniform. The Youth Compression Jock Short System has the jock built into a compression short that ends about mid-thigh
Is this a good youth baseball cup?
Yes. It’s made for youth baseball and softball players, including catchers, plus lacrosse, football, hockey, wrestling and martial arts. The youth cup’s polycarbonate shell helps deflect impact from foul balls, sticks and contact, and the four straps help keep it in place through every slide and dive.
What happens when my athlete outgrows Youth X Large?
Move up to adult sizes. Adult Small to Large are available with the youth cup, so teens and smaller-framed athletes can keep the smaller cup while moving into a bigger jock.
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. 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.
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