Product Colors and Sizes
- Black Friday product
- New Deal product
- Cyber Monday product
- Clearance product
- Deal product
- Best Seller product
- Ecodesign product
- New product
- Staff Pick product
- In The News product
- Innovation product
- product
- Black Friday product
- New Deal product
- Cyber Monday product
- Clearance product
- Deal product
- Best Seller product
- Ecodesign product
- New product
- Staff Pick product
- In The News product
- Innovation product
- product
Boxing and Martial Arts Mouthguard Size L 100
Thermoforming mouth guard for adults doing boxing and martial arts (boxing, Muay Thai, kickboxing, full-contact karate, taekwondo). Complies with the new XP S72-427 standard.
Free shipping over $49
Final Sale: No returns or exchanges
See our return rules
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Videos
Product Features

Shock protection
Complies with the new XP S72-427 standard
Easy breathing
2 mm ventilated space to let air circulate as you exercise.
Anatomical design
Heat-moldable for a perfect fit.
Puncture resistant
Single layer of material 5 mm thick.
Product Lifestyle Image Gallery
Image Gallery




Questions & Answers
There are no questions
Be the first to post a question
Product Customer Reviews

Not true to size. Can i change it after i opened box?
This is way too big, it hurts my jaw!
Thanks for your opinion on Mouthguard Size L - Black. I'm sorry to hear about your issue with the size of the mouth-guard. We do have the size S as well or, in the new models 500, even the M. I suggest you to try with one of those smaller size
Don't forget you can claim a total refund or a product change in your nearest Decathlon store
Kind regards
Nicola
I bought a mouthguard for the second time at decathlon because the first one i thought i had messed up as the product would not stay on the upper tooths and was way too big for the under teeth. So i bought it for the second time to see if it would make a difference if i would exactly follow the instructions, same result! What a waste of my money , TWICE! How can you sell a product that does not do its work, even with the instruction video you can see that the product is way to big. Really dissapointed !
Thanks a lot to send us your opinion on 100 Adult Mouthguard. I'm sorry to hear all your trouble to fit the mouth-guard. Your kind of feedback are very useful for our product managers in order to design and produce better products.
Don t forget you can claim a total refund or a product change in one of our Decathlon store
Kind regards
Nicola
Works well so very happy
For the very cheap price I thought I'd try one of these for a laugh after deciding to do a bit of sparring after a long absence. Following the application instructions to the letter I'm left with at least 6mm extra plastic at the bottom below my teeth, hence not fitting at all and falling out. You can see for yourselves how very badly this mouthguard fits the model in the Decathlon video on this page, he's got more mouthguard below his teeth than actually on them, mine is exactly the same. I wouldn't waste time returning but it shall be going in the bin & I'm off to the dentists to get a proper one, that actually fits. Waste of time and money.
Thanks for let us know your opinion on 100 Adult Mouthguard. This kind of very detailed feedback are really important for us in order to develop better products that can meet your expectations and be useful to practice boxing. I ll pass it to our R&D department.
Thanks again and sorry for any problems caused by the item
Kind regards
Nicola
Used by our son, 12 years old, for PE lessons at school. Relatively straight forward instructions to follow to mould to teeth.
Have tried various mouthguards for my 13 year old and this is the best he has tried
Nothing special, just a mouthguard. Only got it for a week, will see.
Hello Bowie,
Thank you for your rating and comments
At the same time, we apologize that we have failed to bring you a delighted product experience.
We will contact you directly and ask for more details. Please look forward to our improvement in the coming time!
We are concerned with your shopping experience at Decathlon, so I sincerely thank you again for spending your precious time writing us your feedback to make us improve.
I hope you can give us a chance and we are looking forward to seeing you again in the store.
If you have any further questions, please do not hesitate to contact us. Good day!
Decathlon Hong Kong Fitness Team
Alex
larger
Hello Walter,
Thank you for your feedback on our product!
We are sorry to hear about your encounter. In order to have a deeper understanding of your situation, our staff will contact you in a while. Thank you so much for your patience.
If you have any more questions, please do let us know and we would be more than happy to assist. Hope to see you around soon!
Cheers,
Emi
Decathlon Hong Kong Fitness Team
good product
Quality is good and soft for mouth
Nice
Best in this price.
This is not a quality product.. and not my size
Dear Siddhant,
Thank you for reviewing our product. Your feedback is crucial for continuously improving our products and your experience with Decathlon.
I regret this inconvenience and I would kindly request you follow the instructions mentioned behind the cover to under more about, "How to use the product" or use this link to watch a video
https://www.decathlon.in/p/8393899/mouth-guard/adult-boxing-and-martial-arts-mouthguard-100-size-l?id=8393899&type=p
I am looking forward to seeing you shopping with us soon.
Thank you,
Sincerely
Vigneshwar
Comfortable to wear, easy to mould. Looks good. Hope it serves it function.
Additional Product Information
Composition
Accessories : 100.0% Polypropylene ; Body : 100.0% Ethylene Vinyl Acetate ; Handle : 100.0% Polypropylene
New, safer design
Our mouthguard complies with the new XP S72-427 standard, which stipulates the following features: - Thicker to prevent perforation.- Built-in breathing channel so that you can breathe even when your jaw is closed.- Meshing of the upper and lower teeth to more effectively hold the jaw in place (protection against fractures).-A gum covering to stop the teeth from coming loose.
Which size should you choose?
S: User is 3'7” to 4'7” tall (CHILD)M: User is 3'7” to 4'7” tall (CHILD)M: User is over 4'7” tall
Directions for use
Always wear your mouthguard during training sessions and competitions.To mold your mouthguard correctly, soak it in boiling water for exactly the amount of time it says on the instructions. This time will be indicated in the instructions and may vary from model to model. Watch the video tutorial to find out how to mold your mouthguard.To guarantee good protection, your mouthguard should stay in place when you open your mouth.
Care instructions
Wash in fresh water. Leave to dry naturally before putting it back in its storage box (original box).For optimal protection, replace your mouthguard at least once per year or as soon as it starts to show signs of wear.
Care advice
Wash in fresh water. Leave to dry naturally before putting it back in its storage box (original box).For optimal protection, replace your mouthguard at least once per year or as soon as it starts to show signs of wear.
Storage instructions
Store your mouthguard in its case (sold with the product).
Origin
Imported
Superior quality. Unbeatable prices.
For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.
Decathlon makes the difference
-
Research and development
delivers high-quality cost-effective products
-
State-of-the-art production processes
minimize manufacturing costs
-
Optimized supply chain
reduces retail prices
-
Minimal retail footprint
lowers overhead and indirect costs