Mouthguards
Find a guard you will wear.
Thin remouldable guards and familiar boil-and-bites. Compare fit, bulk and the trade-offs before you choose.
Updated October 2026
The shortlist
Find the pick that fits.
Each pick does a different job. Read the review for the useful details, the catches and the sources behind it.
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Compare the picks
Swipe across to compare all four columns.
| The pick | Best for | Price band | Worth knowing |
|---|---|---|---|
| SISU Max 2.4mm | overall | Check retailer | Less bulk than a classic guard, if you want maximum padding |
| Venum Challenger Mouthguard | value boil-and-bite | Budget | Harder to breathe through |
| Shock Doctor Gel Max | Kids without braces | Budget | Not compatible with braces |
| OPRO Power-Fit | peace of mind | Check retailer | Check the dental warranty terms for your country |
- 01
Best overall
SISU Max 2.4mm
A thin, remouldable guard for grapplers who dislike bulky mouthguards. At 2.4 mm, it offers less bulk than a traditional guard.
- Thickness
- 2.4 mm
- Fit
- Mould at home, remould up to 20 times
What reviewers like
- Thin enough to talk and breathe through
- Stays in place
- Remouldable if the first fit is off
Worth knowing
- Less bulk than a classic guard, if you want maximum padding
- 02
Best value boil-and-bite
Venum Challenger Mouthguard
A value boil-and-bite guard. The cited review notes that its bulk can make breathing harder, and it can loosen when your mouth opens wide.
- Type
- Boil-and-bite
- Build
- Rubber outer, gel inner frame
What reviewers like
- Good value
- Classic protective build
- Reasonable fit once moulded
Worth knowing
- Harder to breathe through
- Can fall out with a wide-open mouth
- 03
Kids without braces
Shock Doctor Gel Max
A boil-and-bite guard in Youth (10 and under) and Adult (11 and over) sizes. The standard Gel Max is not compatible with braces.
- Model
- Standard Gel Max, not Gel Max Power
- Youth
- Ages 10 and under, per Shock Doctor
- Adult
- Ages 11 and over, per Shock Doctor
What reviewers like
- Youth and adult sizes
- Manufacturer fitting instructions available
- Boil-and-bite fit
Worth knowing
- Not compatible with braces
- Correct size and secure fit are essential
- 04
Best for peace of mind
OPRO Power-Fit
A hand-finished guard sold with a dental warranty. Check the terms for your country, and compare the price with simpler options.
- Build
- Hand-finished, gel fins
- Warranty
- Dental warranty, terms by region
What reviewers like
- Dental warranty included
- Attractive, recognisable design
- UFC and USA Wrestling partnerships
Worth knowing
- Check the dental warranty terms for your country
- We have not independently compared impact protection
Read before you buy
Buying guide
How to choose a mouthguard
In BJJ the hits are accidental: a knee in a scramble, a head in a guard pass. A mouthguard is cheap insurance against chipped teeth and cut lips.
The trade-off is breathing. Classic boil-and-bite guards are bulky, which makes breathing through your mouth harder mid-roll; thinner guards like the SISU Max let you talk and breathe normally. If you want the best possible fit, a dentist can make a custom guard.
What to check
- Thickness: thin to breathe, thick for padding
- Fit: remouldable guards forgive a bad first fit
- Kids: a guard they like the look of is a guard they'll wear
- Best fit of all: a custom guard from your dentist
Questions
Quick answers
Do you need a mouthguard for BJJ?
It isn't required in most gyms, but it's a good idea. Accidental knees and heads happen in scrambles, and a mouthguard costs far less than a dental repair.
What is the best mouthguard for BJJ?
The SISU Max 2.4 mm is the pick reviewers rate highest for grappling: thin enough to talk and breathe through, and remouldable up to 20 times.
Which mouthguard is best for kids' BJJ?
Gel Max comes in Youth (10 and under) and Adult (11 and over). It is not compatible with braces. Choose the correct size and follow the exact product's fitting instructions. Flavoured editions are separate variants.