Youth High Performance Athletic Cup
A youth athletic cup built like our adult cup, just smaller. The polycarbonate shell deflects and spreads the force of a foul ball, stick, or knee, and the soft rubber rim keeps the edges comfortable. It fits the cup pocket in every Diamond MMA youth and adult jock.
Polycarbonate shell with a soft rubber elastomer rim
Sized for younger athletes: 5.5" x 3" x 2"
Lifetime warranty on the athletic cup
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 every Diamond MMA athletic cup.
Cup size guide
The youth cup is built the same as our adult cup, in a smaller size for younger athletes, teens and smaller builds.
| Cup | Length | Width | Depth |
|---|---|---|---|
| Youth (this cup) | 5.5" | 3" | 2" |
| Adult | 6.75" | 4" | 2.25" |
The cup should cover fully without pinching at the edges. If it looks small on your athlete, move up to the adult cup.
What’s included
One Youth High Performance Athletic Cup. Jock sold separately. Jock sold separately. Shop our Jock Collection.
Compatible jocks
The youth cup fits the cup pocket in:
- Youth Compression Jock Short
- Youth Quad Strap Jock
- Adult Diamond MMA jocks and shorts in sizes Small to Large, for teens moving into adult sizes who still want the smaller cup. View Jock Collection.
Our briefs don’t have a cup pocket and aren’t made to be worn with a cup.
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
The youth cup is built the same as our adult cup, just smaller. The polycarbonate shell holds its shape on impact instead of compressing like soft padding, and the cup’s geometry helps deflect and spread the force of a hit.
A soft rubber elastomer rim lines the edges, so it sits comfortably on younger athletes and helps reduce rubbing.
It fits the tailor-fit cup pocket in every Diamond MMA youth jock, where four straps help keep it snug against the body through every slide, dive and tackle.
-
Materials & care
Shell: Polycarbonate
Rim: Soft rubber elastomer
Size: 5.5" long x 3" wide x 2" deep
Care: Leave it in the jock’s cup pocket and machine wash cold, then air dry. Or wash it by hand. -
Warranty
Every Diamond MMA athletic cup, including the youth cup, has a lifetime warranty. If your cup is damaged during normal use, submit a claim through our returns portal.
Problem with your gear? Fill out the Warranty Claim Form.
What makes a good youth baseball cup?
Two things: a cup that’s sized right and a jock that holds it in place. The Diamond MMA youth cup has a polycarbonate shell that helps deflect and spread the force of a foul ball or bad hop, and a soft rubber rim that keeps the edges comfortable. Paired with a Diamond MMA youth jock, four straps help keep the cup snug against the body, so your athlete is focused on the game, not adjusting their gear.
Protective gear helps reduce risk but can’t prevent every injury.
Safety & product disclaimer
Built for young athletes
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Same build as the adult cup
A polycarbonate shell that helps deflect and spread the force of a hit, in a smaller size.
-
Soft rubber rim
Cushions the edges so the cup sits comfortably and helps reduce rubbing.
Frequently asked questions
Is this a good youth baseball cup?
Yes. It’s made for youth baseball and softball players, including catchers, plus football, lacrosse, hockey, wrestling and martial arts. The polycarbonate shell helps deflect and spread the force of a foul ball, stick or knee, and the soft rubber rim keeps the edges comfortable for young athletes.
How big is the youth 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, if you want to compare.
Is the youth cup the right size for my athlete?
The youth cup is built for younger athletes, teens and smaller builds. It should cover fully without pinching at the edges. If it looks small on your athlete, move up to the adult cup.
What jock does the youth cup fit?
It fits the cup pocket in every Diamond MMA youth jock, including the Youth Compression Jock Short and Youth Quad Strap Jock. It also fits our adult jocks and shorts in sizes Small to Large, for teens moving into adult sizes who still want the smaller cup.
Is it a hard cup or a soft cup
Hard. The shell is polycarbonate, so it holds its shape on impact instead of compressing like soft padding. It’s built the same as our adult cup, just smaller.
How do I clean the cup?
Leave it in your Diamond MMA jock’s cup pocket and machine wash cold, then air dry both. You can also wash the cup by hand.
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, or 60 days when you register your warranty. Fill out the Warranty Claim Form if you have a problem.
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’s the wrong size?
Exchanges are free, so you can swap for the right size. You can also return it within 30 days of delivery. Add Checkout+ at checkout for free returns and package protection.
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