SISU Mouthguard Reviews: Aero NextGen & 2.4 Max Guard

Published March 8th, 2022 by Chris Riley
Fact Checked by
Erik Rivera

Mouthguards are commonly used by athletes and participants that take part in contact sports such as MMA, football, and basketball. Mouthguards do more than just to protect your teeth, mouthguards also protect your mouth against injuries. 

With so many options to choose from, finding the perfect mouthguard for you might seem daunting, but we have reviewed two of the best options currently available on the market and we are pretty sure that one of these SISU mouthguards will be perfect for you. 

SISU Brand History

SISU mouthguards are designed and manufactured in Saline, Michigan by Akervall Technologies Inc (ATI). ATI’s mission is to become the global gold standard in mouthguards. SISU mouthguards with their unique features and protection and comfort-focused designs are designed specifically with the athlete in mind. 

The founders of ATI are Swedish which explains the name SISU. SISU is a Finnish concept that stands for a mix of different values including determination, strength, and resilience which are all very fitting characteristics for a mouthguard. 

SISU Mouthguard Types 

SISU is renowned for the thinness of their mouthguards. Thanks to their remarkable thinness SISU mouthguards are extremely comfortable, and after reviewing some of the mouthguards we can confirm that it almost feels like you aren’t wearing a mouthguard at all. 

But don’t be fooled by the thinness of these mouthguards, they offer exceptional protection against the hardest of blows. SISU mouthguard designs are backed by science and thanks to their ability to absorb energy they offer 32% better protection against dental damage in comparison to other mouthguards available on the market. 

SISU supplied us with their Aero NextGen & 2.4 Max Guard and we can’t wait to share our findings with you about these two industry-leading mouthguards. 

sisu mouthguard

SISU Aero NextGen 

The functionality of the SISU Aero NextGen Mouthguard 

Molding 

Don’t be alarmed when your SISU mouthguard arrives and it is completely flat in the shape of a boomerang. Molding is required before you can use the Aero NextGen 2, instructions on how to mold your new mouthguard will be included in the packaging. 

The molding of a SISU mouthguard is slightly different from that of a boil and bite mouthguard. Once heated line your teeth up on the flat mouthguard and finish the process by shaping the mouthguard around your teeth with your fingers. 

If you are unsure about how to fit your new mouthguard do what we did which was to watch this helpful video by SISU. 

If your first attempt fails don’t worry, the Aero NextGen 2 can be reheated and reshaped until you are completely satisfied with the fit and feel of the mouthguard. 

Sports Mouth Guard by SISU, Max 2.4mm Mouthguard for Football, Hockey, Lacrosse, Boxing, Custom Fit for Youth/Adults, Electric Blue
  • SISU Max NextGen mouth guards offer premium, warrantied dental protection for players age 11 and up, including adults
  • 2.4mm thick, the Max offers the most protection of any SISU guard, but is still 30% thinner than conventional sports mouth guards
  • The slim, custom fit makes it easy to talk, breathe and drink without removing the guard, which contributes to better hygiene
  • Diffusix technology scientifically distributes impact forces from soccer, football, hockey, lacrosse, basketball, and other contact games
  • Compared to the original, NextGen SISU guards feature a wider bite pad, rounded edges for comfort, and improved mold-ability to ensure a perfect fit

Comfort

Mouthguards normally take some getting used to and it was no different when we tried out the NextGen Aero, but once it was molded into place it was very easy to forget that you are wearing a mouthguard at all. 

This unobtrusive mouth guard allows you to talk, drink, and breathe with ease regardless of the type of activity that you are taking part in. In addition to being very comfortable, the NextGen Aero is also very secure. Thanks to the tight fit of this thin mouthguard it isn’t necessary to bite down on the mouthguard to keep it in place. 

Protection 

The NextGen Aero features an extremely thin design that is only 1.6mm thin. The thin profile might deter some of you, but we can assure you that the NextGen Aero offers ample protection. 

According to the science behind the design of SISU mouthguards, the NextGen Aero absorbs 94% more energy than the average mouthguard which translates into 32% better protection from dental damage. 

Aesthetics

The NextGen Aero is available in a variety of bright and funky colors including blue, red, green, purple, orange, yellow, and pink. If you were to purchase the pink option a small portion of the profits go to the American National Breast Cancer Foundation. 

The bright solid colors of the NextGen Aero are eye-catching, but unfortunately, this mouthguard isn’t available with any fancy graphics or customization options. 

Cost 

The NextGen Aero is a very affordable mouthguard that offers exceptional value for money. In addition to being affordable, it also comes with a $35 000 dental warranty for one year. The dental cover offered by SISU is higher than their fellow competitors which shows that they are happy to put their money where their mouth is. 

Mouthguards are available in a variety of prize options, but at the end of the day it boils down to purchasing a mouthguard that offers maximum protection. If there is a possibility that you will either get kicked, punched, elbowed, or kneed in the face then you need to know that you can trust your mouthguard and the NextGen Aero can be trusted. 

Pros

  • The Aero NextGen features a tight fit which ensures easy-drinking, talking and breathing
  • A re-moldable design which allows you to adjust the fit until you are 100% comfortable with it 
  • High dental warranty 
  • Affordable, budget-friendly price tag 
  • Suitable for individuals with braces

Cons

  • The molding process can be a bit tricky 
  • Graphic design options are unavailable with this model 
  • The perforated design pattern can be slightly uncomfortable against your lip 

SISU 2.4 Max Guard

The functionality of the SISU 2.4 Max Guard  

Molding 

SISU mouthguards aren’t your average mouthguards and their molding process isn’t normal either. SISU mouthguards come in a flat boomerang shape that gets molded into the perfect fit for you personally. 

Heat is required when molding the 2.4 Max Guard. Place the boomerang-shaped mouthguard into some hot water, once the plastic has warmed up place your teeth in the middle of it, and use your fingers to mold the plastic around your teeth. When we did this the first time we had some issues adjusting to this process, but don’t be alarmed, the 2.4 Max Guard can be reheated and shaped until you find that perfect fit. 

Comfort

When it comes to comfort the 2.4 Max Guard ticks all of the boxes. When we tried it out initially it took a while to get used to it but once we got the fit just right it felt like we weren’t wearing a mouth guard at all.  

When you wear the 2.4 Max Guard for the first time it feels a bit strange because it isn’t bulky like the majority of mouthguards. In addition to its small profile, the material of the 2.4 Max Guard does feel harder than other mouthguards which takes some getting used to, but after wearing it once or twice you won’t even notice that anymore. 

The 2.4 Max Guard is very comfortable, there is no arguing about that, but what makes it even more comfortable is the fact that you can have a discussion with ease while wearing it and it doesn’t make it difficult to breath when your heart rate goes up. 

The 2.4 Max Guard clips onto your teeth which ensures that it doesn’t just fall out for no reason, you also don’t have to worry about biting down onto it the whole time to keep it in place. It is difficult to find anything bad to say about this mouthguard, but the only negative feedback is that its firm edges can catch your gums if the angle is slightly off when you insert it into your mouth. 

Protection 

The 2.4 Max Guard is 2.4mm thin which is 30% thinner than your average mouthguard. This thin profile might deter some of you, but don’t be alarmed. The 2.4 Max Guard is designed out of strong thermoplastic materials that make this mouthguard 50% stronger than typical mouth guards. 

SISU trusts their design which is why the Max Guard comes with a $35 000 one year dental warranty which is much higher than the other average warranties that we have come across. 

Aesthetics 

The Max Guard is available in a host of different color options including blue, red, black, white, pink, and purple. The designs aren’t fancy and they don’t feature any visuals or graphics but these solid color options still stand out and look very good. 

Cost 

The 2.4 Max Guard is by no means the cheapest mouthguard available on the market but it is not the most expensive option either. The Max Guard offers exceptional value for money considering the protection and functionality that it offers athletes. 

Always keep in mind that a trip to the dentist is way more expensive than investing in a good mouthguard that offers ample protection against kicks, bumps, and punches. 

Pros 

  • The 2.4 Max Guard features a secure, tight fit 
  • Thanks to its tight fit it is easy to drink, talk and breath with this mouthguard 
  • Accompanied with $35 000 dental warranty 
  • Suitable for individuals with braces 

Cons 

  • As is the case with any mouthguard it takes time getting used to it 
  • The 2.4 Max Guard is only available in a limited amount of color options 
  • The hard edges of this mouthguard can be uncomfortable at times 

Mouthguard Comparison Table and Marketplace

Image Product Features Price
Impact Custom Professional MMA/Boxing/Muay Thai Mouthguard Red Fangs Impact Custom Professional MMA/Boxing/Muay Thai Mouthguard Red Fangs
  • WEAR IT LIKE THE PROS! We will craft you a perfect fitting mouthguard you will love to wear! Custom fitted with our professional grade fast and easy to use impression kit , includes free 3-Way paid postage. 100% perfect fit guaranteed.
  • THE DESIGN: Maximum protection with minimalist feel for athletes of all ages and levels
  • SUPERB QUALITY & PROTECTION: At 6-7mm thickness, it assures heavy impact absorbance, and allows optimal oxygen flow to speak clearly and communicate with ease
  • HOW IT WORKS: Once we receive your order we’ll ship your Super Simple Fit Kit the next business day. With the kit in hand, you’ll make an impression of your teeth right at the kitchen table. It only takes about 2 1/2 minutes to complete. Follow the easy directions included with your kit. Once it’s done send your impression back to Impact using the postage paid label provided. Upon receipt of your impression, we’ll have one of our craftsman create your guard and send back the finished product
  • MATERIALS: Finished product is BPA free, made in the USA, Over 25,000 mouthguards specially handcrafted
10
Check Amazon Price
GuardLab APEX Mouthguard w/Case | Football, Basketball, Boxing, Wrestling, Soccer, Karate, Hockey, MMA | Adult & Youth | Pre-Indented for a Precise Fit (Gold Fangs, Large) GuardLab APEX Mouthguard w/Case | Football, Basketball, Boxing, Wrestling, Soccer, Karate, Hockey, MMA | Adult & Youth | Pre-Indented for a Precise Fit (Gold Fangs, Large)
  • “A BETTER BOIL & BITE” - Suitable for all sports. Most comfortable and innovative mouthguard on the market, developed using 3D Technology. 100% Made in the USA.
  • BEST FIT EVER - Award-Winning “APEX Bite Pattern” that pre-indents where to bite down and ensures a precise and accurate fit.
  • PROTECTION - Worn on the upper teeth. Precise fit won’t obstruct breathing or communicating.  Versatile Protection for sports like Boxing, MMA, Kickboxing, Muay Thai, Football, Hockey, Field Hockey, Rugby, etc.
  • INCLUDES MOUTHGUARD CASE – Great bonus value plus, we use premium high quality dental grade materials that are BPA free, Latex free and phthalates free.
  • INSTRUCTIONS - Boil, bite and wear (follow the full instructions in the package). Wearers with braces should consult their dental professional before fitting at home. (Refer to Sizing Chart Below, Medium Fits Most, Small is recommended for Ages Under 12, Large for those with a Wide-Bite)- (No Returns on Boiled/Fitted Products)
9.5
Check Amazon Price
Sports Mouth Guard by SISU, Max 2.4mm Mouthguard for Football, Hockey, Lacrosse, Boxing, Custom Fit for Youth/Adults, Electric Blue Sports Mouth Guard by SISU, Max 2.4mm Mouthguard for Football, Hockey, Lacrosse, Boxing, Custom Fit for Youth/Adults, Electric Blue
  • SISU Max NextGen mouth guards offer premium, warrantied dental protection for players age 11 and up, including adults
  • 2.4mm thick, the Max offers the most protection of any SISU guard, but is still 30% thinner than conventional sports mouth guards
  • The slim, custom fit makes it easy to talk, breathe and drink without removing the guard, which contributes to better hygiene
  • Diffusix technology scientifically distributes impact forces from soccer, football, hockey, lacrosse, basketball, and other contact games
  • Compared to the original, NextGen SISU guards feature a wider bite pad, rounded edges for comfort, and improved mold-ability to ensure a perfect fit
9.8
Check Amazon Price
Venum Venum "Challenger" Mouthguard, Red Devil
  • Nexfit Gel Frame for a better adjustment and comfort
  • Advanced design for an optimal breathing during the fight
  • High Density Rubber Frame for a better shock management and top protection
  • Delivered with its protective case for a better hygiene
  • CE Certification/Norm: SATRA M33:2011
8.8
Check Amazon Prices
Shock Doctor Gel Max Mouth Guard, Sports Mouthguard for Football, Lacrosse, Hockey, Basketball, Flavored mouth guard, Youth & AdultBUBBLEGUM, Adult, Flavored Shock Doctor Gel Max Mouth Guard, Sports Mouthguard for Football, Lacrosse, Hockey, Basketball, Flavored mouth guard, Youth & AdultBUBBLEGUM, Adult, Flavored
  • CUSTOM COMFORT & FIT - Gel-fit Liner Technology is easy to fit, our mold forms specifically to your teeth and gums, providing a comfortable fit for extended use, available in a variety of customized colors
  • BREATHABLE - Integrated breathing channels make it easy to breathe while wearing the guard and maximize your performance
  • PROFESSIONAL DENTAL PROTECTION - Heavy duty Exoskeletal Shock Frame provides full mouth protection during the hardest impacts, protects cheek and tongue, teeth grinding, and secures teeth in place
  • DURABLE - Crafted using heavy duty material, combined in our Triple Layer Design for added protection and durability
  • RECOMMENDED SPORTS - Suitable for all contact sports where a mouth guard is required or recommended including football, wrestling, boxing, and more! Includes a detachable helmet strap for football
8.6
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What’s the difference between the Sisu Aero NextGen and the 2.4 Max Guard? 

Both of these SISU mouthguards feature very similar designs, but there are some key differences between the two models. 

The obvious difference is the fact that the Max Guard is 2.4 mm thick compared to the 1.6mm size of the Aero NextGen. Additionally, the Max Guard is also more expensive than the Aero NextGen. 

When it comes to performance both mouthguards offer exceptional protection, but out of the two the Max Guard definitely offers more protection. 

Best Mouthguards for different sports

To some, a mouthguard is a mouthguard but if you are an athlete and if you are serious about protecting your mouth and teeth then that statement is very far from the truth. Different mouthguards are more suitable for some sports than what they are to others. 

If basketball is your game then a comfortable mouthguard that allows you to talk and breathe with ease is a must.

To find the best basketball mouthguard click here.  

Boxers and combat fighters get punched in the face over and over again, with that being said a good mouthguard is a must that will offer maximum protection for both your mouth and teeth.

To find the perfect mouthguard for boxers click here. 

Final Thoughts 

SISU mouthguards are unique, but in this case, being different is a good thing. Both the Aero NextGen and the 2.4 Max Guard are both exceptional mouthguards that will offer industry-leading protection. 

Regardless of which option you go with, both of these high-quality mouthguards will ensure that both your mouth and teeth stay safe during a sparring session.

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