Fight2Win is the specialist in men’s groinguards for all martial arts – official partner of Rival Boxing Gear, Cleto Reyes, Shock Doctor, and XPRT Fight Gear, among others. From entry-level models to professional kidney and groinguards: the full range is in stock. Read more
Below you will find our information guide to men’s groinguards – from wearing systems and materials to sizing advice and brand comparisons. For all martial arts and every level.
From a basic cup to a professional kidney and groin protector – the complete men’s range
Fight2Win offers the most comprehensive range of men's groinguards in the Netherlands.
From the XPRT Basic men's (bestseller, XXS-XL, Designed in NL) as an entry-level model to the Winning CPS-500 (Made in Japan, 320 g) as the top Professional choice.
Mid-range: Shock Doctor SD213, SD329 (carbon fiber, Bio-Shape Design, F2W choice) and Booster G8.
Professional boxing: Rival RNFL Pro, RNFL10, RNFL10-360 D3O (Intelli-Shock D3O technology), RNFL100 Professional (Feather Lite, microfiber), No-Foul Guerrero (leather, laces), Cleto Reyes Kidney and Foul (leather, handmade in Mexico) and Winning CPS-500 (laces or hook-and-loop, Made in Japan).
Kickboxing and thai boxing: Shock Doctor Core Bioflex compression shorts (S-XXL) or Booster G8 (plastic, M-XL).
MMA and Krav Maga: Shock Doctor Core Bioflex or Shock Doctor Ultrapro 337 compression shorts (carbon fiber, S-XL).
Boxing for recreationalists/advanced athletes: Shock Doctor SD329 (F2W choice) or Adidas Pro (polyurethane, 177 g, S-XL).
Professional Boxing: Rival RNFL Pro (F2W choice), Rival RNFL10, Rival RNFL10-360 D3O, Cleto Reyes Kidney and Foul or Winning CPS-500.
Carbon fiber, D3O and leather – choose the material based on your sport
Carbon fiber (Shock Doctor SD329, Ultrapro 337): stronger than plastic while remaining lightweight—ideal for advanced athletes in all martial arts.
Intelli-Shock D3O (Rival RNFL10-360 D3O): superior shock absorption for professional boxers—the material hardens on impact.
Leather and foam (Rival RNFL10, Cleto Reyes Kidney and Foul): traditional professional materials for high-level boxing.
Microfiber Feather Lite (Rival RNFL100 Professional, 377 g): the lightest professional model in our range.
Men’s groinguard size guide – from boys’ XXS to adults’ XXL
XPRT Basic for men: available from XXS (boys) to XL in White, and XS to XL in Black—the widest size range in our collection.
Shock Doctor models (SD213, SD329, Core Bioflex, Ultrapro 337): S to XXL—measure your waist circumference to find the right size.
Rival RNFL series (RNFL Pro, RNFL10, RNFL100): S to XL. The RNFL10-360 D3O is available in M and L.
Rival No-Foul Guerrero and Winning CPS-500: M and L—specifically for adult professional boxers.
Velcro or laces – closure systems for professional boxing groinguards
Most groin protectors have an elastic waistband—no fastening required, just pull it on.
For professional boxing kidney and groin protectors, there are two options.
Velcro (Rival RNFL Pro, RNFL10, RNFL10-360 D3O, Cleto Reyes Kidney and Foul, Winning CPS-500B): quick to put on and take off, and easy to fasten yourself.
Laces (Rival RNFL100 Professional, Rival No-Foul Guerrero, Winning CPS-500 Lace-Up): provides the most precise and snug fit—the choice of professional boxers. Requires a second person to fasten.
Maintaining your men’s groinguard – keeping it hygienic and durable
Loose-fitting trunks (XPRT Basic, Shock Doctor SD213, SD329, Booster G8, Twins Steel G3): easy to clean with a damp cloth and mild detergent. Always air them out after use.
Compression pants (Shock Doctor Core Bioflex, Ultrapro 337): follow the washing instructions on the label. Wash after every training session.
Professional leather kidney and groin protectors (Rival RNFL10, Cleto Reyes, Rival No-Foul Guerrero): treat regularly with a leather conditioner. Never store in a closed bag.
Microfiber models (Rival RNFL100 Professional): wipe with a damp cloth and air out after use.
Fight2Win - official partner of Rival and Cleto Reyes for professional groinguards
Fight2Win is the official partner and distributor of Rival Boxing Gear, Cleto Reyes, Shock Doctor, Twins Special, Booster Fight Gear, and XPRT Fight Gear in the Netherlands.
From the XPRT Basic men’s model to the Winning CPS-500 Made in Japan: the complete range is in stock and available for immediate delivery.
Looking for advice on the right groinguard for your sport and level? Visit our showroom or contact our specialists.
Men's groin protectors & groinguards, available directly from stock
Men's groin protectors & groinguards are shipped from our own stock within 1 business day! We are the martial arts specialists and know everything about boxing gloves, kickboxing gloves, shin guards, handwraps, bag gloves, and other training equipment!
We have a huge range of Groin protectors & Groinguards for children, women, and men in stock at our showroom! Visit us for expert advice and purchase your chosen item right away.
Curious about all our premium boxing and martial arts equipment? Explore our full range of martial arts equipment in the webshop.
Why are groinguards in boxing so different from regular cups?
A "regular" cup only protects the groin. A no-foul protector in boxing protects the kidneys, liver, and groin.
In boxing, the chance of taking punches to the liver or kidneys is much greater than in kickboxing. Extra protection is therefore needed to minimize the risk of injuries and damage.
Is a groinguard mandatory?
Yes, usually.
A groinguard is often mandatory or recommended. For boxing, kickboxing, and karate training, for example, it is recommended. In krav maga and self-defense systems, it is mandatory. The area protected by the groinguard is, of course, highly vulnerable to injury.
During exams and competitions, a groinguard is always mandatory for both men and women.
Can you wash groinguards and cups?
Yes and no.
This depends on the brand and model. You can almost never wash the cup (the hard part), nor do you need to. Most regular groinguards are built into a kind of sports brief (jockstrap). You can remove the cup and wash the brief.
The larger kidney and groinguards (No-Foul) designed for boxing obviously cannot be washed in a washing machine either. This really shouldn’t be necessary. You can simply wipe them down and dry them to keep them fresh.
Naturally, you can’t wash the steel groinguards either. The metal is not designed to withstand this.
What size groinguard should I get?
When choosing the size of groinguards, the main consideration is waist circumference rather than the cup size itself. For each groinguard, we have included a unique size chart (in the size selector and below in the product information) for that specific brand and model.
9,5 - Excellent from 1100+ reviews
Groinguard Shock Doctor Ultra SD329
Compression trousers groinguard Shock Doctor Core Bioflex €39,50 /Limited stockFight2Win ChoiceDeveloped in USABioflex Cup
Groinguard Shock Doctor Bio Flex SD213 €24,50 /In stockFight2Win ChoiceDeveloped in USABioflex Cup
Groinguard Boxing Rival RNFL100 Professional White-Gold €179,00 /Limited stockDesigned in CanadaFeather Lite
Groinguard Boxing Rival RNFL100 Professional Black-Gold €179,00 /Limited stockDesigned in CanadaFeather Lite
