100 Boxing and Martial Arts Mouthguard Size L - Clear



Made for
Thermoforming mouth guard for adults doing boxing and martial arts (boxing, Muay Thai, kickboxing, full contact, taekwondo). Complies with the new XP S72-427 standard.
Sizes guide


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Impact protectionComplies with the new XP S72-427 standard
Easy breathing2 mm ventilated space to let air circulate as you exercise.
Anatomic designThermoformable: adapts perfectly to fit all teeth.
Puncture resistanceSingle layer of material 5 mm thick.
Warranty2 Years
Technical Informations

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.
S = from 1.10m to 1.40m tall (CHILDREN) M = from 1.40m to 1.70m tall L = over 1.70m tall
Directions for use
Always wear your mouthguard during training sessions and competitions. To mould 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 mould your mouthguard. To guarantee good protection, your mouthguard should stay in place when you open your mouth.
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.
Information / Concept / Technology
Packaging : 100.0% Polypropylene (PP) Main part : 100.0% Ethylene Vinyl Acetate (EVA) Handle : 100.0% Polypropylene (PP)

This mouthguard has been approved in rigorous usage tests carried out by a panel of people with different levels of experience, as well as in laboratory tests that are validated by an independent body.

Stockage Tips
After use, remember to put your mouthguard back in its case (sold with the product).


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Rugby Gumshield
Used for 2 to 8 weeks
I buy these in bulk because my son and the other U15s chew their way through them.
Unless you are getting one made by an orthodontist just buy one of these
Response of the brand
Hello Paul,
We are happy that you like our product. Your feedback is very important for us.I hope your son will enjoy

Very bad product
Used for 1 week or less
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 !
Response of the brand
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

Used for 2 to 8 weeks
Works well so very happy
Very poor fit - check end of video on this page!
Used for 1 week or less
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.
Response of the brand
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

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