








🛡️ Protect your smile, dominate the game with SISU Aero!
The SISU Mouth Guard Aero is a cutting-edge, ultra-slim (1.6mm) sports mouthguard engineered with advanced Diffusix technology for superior impact absorption. It offers a custom boil-and-bite fit that’s remouldable up to 20 times, making it perfect for adults and kids, including those with braces. Trusted by professional athletes across rugby, MMA, boxing, and hockey, this lightweight, BPA-free guard delivers unmatched protection without compromising comfort, breathability, or communication.






| ASIN | B01LX2E1JH |
| ASIN | B01LX2E1JH |
| Age Range Description | Youth, Adult |
| Best Sellers Rank | 1,106 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 16 in Sports Mouthguards 51 in Lacrosse (Sports & Outdoors) |
| Brand | SISU |
| Country of origin | USA |
| Country of origin | USA |
| Customer Reviews | 4.5 4.5 out of 5 stars (9,866) |
| Customer reviews | 4.5 4.5 out of 5 stars (9,866) |
| Date First Available | 7 July 2016 |
| Department | Unisex |
| Is discontinued by manufacturer | No |
| Item model number | S16-NG-CB-1 |
| Manufacturer | SISU |
| Product Dimensions | 11.99 x 2.01 x 16 cm; 10 g |
| Product Name | Mouth Guard |
| Units | 1.0 Count |
A**R
Great product
Easy to mould. Perfect for my 4 year old for hockey. The other guards were just too large
A**R
When you’re moulding you can dip a section back in the hot water and shape it bit by bit
Brilliant. Comfortable for kids whose teeth are still growing. Easy to talk and breathe in. Took a few goes to get it in the perfect shape but it can be warmed and shaped over and over til it’s right.
A**N
Different but good
Can be difficult to fit. It feels strange at first due to the hard texture but it works well and is less intrusive because of the compact design.
A**R
Finally a reasonably priced mouth guard that fits a childs mouth and will protect their teeth
I have four children aged 14-7 years who all play rugby or hockey. About three years ago after trying every brand of boil and bite mouth guard I decided that the only way to really protect their teeth was to pay out £45 each for a custom made mouth guard at the beginning of the season. This is expensive but also frustrating if they loose a tooth halfway through the year. The problems I have found with the boil and bite style mouth guard are they don't seem to fit a child's mouth, they either don't mould enough to the mouth shape or they bite right through them while fitting. I have never found one that passes the test of staying in place when the child opens its mouth. It took me a while to understand that this is the crucial thing with a mouth guard, its unlikely that the mouth will be closed at the time of impact and if the mouth guard doesn't stay in place when the mouth is open it offers no protection to the teeth. The other big factor is comfort, children won't' wear a mouth guard that hurts them or makes them gag. I have often witnessed children tucking their mouth guard into their sock as play begins. Recently my youngest daughter started playing hockey. I had neither the time or the justification for a £45 custom fitted mouth guard so I decided to resort to the boil and bite type. I carefully read the reviews and ordered a strawberry flavoured £10 one. It arrived and the case to keep it in was the most useful thing about it. Despite multiple tries with boiling water it didn't stay in place and was clearly too big. It fitted my 42 year old mouth a treat despite being the junior size. I was ready to give up and pay for a fitted one. Then I discovered the Sisu mouth guard. There were only five reviews and it was £16. If it didn't work I was now halfway to a fitted mouth guard. But reading the reviews and the specifications I decided to give it a try. Yippee! its great. Surprisingly its arrives as a flat, thin piece of plastic but a quick dunk in hot water and it moulds perfectly to the mouth. We had to have a couple of goes to get it right but it is now perfect. A light weight, comfortable custom fitted mouth guard which stays in place when the mouth is open and as an extra bonus it comes in cool colours. My only criticism is it doesn't come with a proper plastic case but then I have loads of those from all the discarded, poorly fitting mouth guards I have tried over the years! And if that's not enough they claim that it can be refitted if a tooth falls out by putting it back in hot water and remoulding. Can this really be true? I haven't had to try yet but will certainly get back to you if it is.
N**.
Easy breathing. Becomes brand new in hot water.
It’s really easy to mould multiple times until you’re happy. I was worried that once it stuck together I wouldn’t be able to separate it, as that’s what they warn might happen but luckily for me it didn’t. Just boiling water and it completely unfolded. It’s thin and doesn’t get much in the way. Very easy to breathe. For boxing and other sports where you get hit in the face you might prefer a bulkier mouth guard with some shoc absorbance. This just holds everything together firmly.
T**Y
Finally a gum shield that fits!
After about 10 other gumshields tried, this one fits! My 9 year old son has a small mouth and a mixture of milk teeth and very awkward adult teeth - he's in that no school photo phase! 😂 Well, we've tried gumshields from all the other brands - various Opro, safe Jaws, generic non branded ones and we were almost giving up hope and forking out for a dental custom fit one. Then we found these and after attempt no 3 we got a fantastic fit! It stays in place He can talk with it in He can drink with it in He's over the moon. If you make a mistake first time round, just pop it back into the water and it will flatten out again. If you need to remould a certain part just dip that part into the water. It's also worth pointing out that the water isn't boiling like the other types (60-70°c) so your not scalding your kids gums! I'll be recommending these to everyone on his team!
G**Y
Perfect gum guard
Best gum shield for field hockey - you can actually breathe and talk!
E**Y
Wrong colour
Good product but they sent me black when I ordered a white mouth guard
J**R
Excellent produit
U**G
Good
L**O
Excellent produit. Parfait pour un Enfant de 8 à 12 ans.
A**.
Compré una talla más grande pero aún así se amolda bien aunque haciéndole un leve arreglo , es cómodo aunque duro, se puede respirar y hablar.
K**Z
This is great lightweight mouth guard that was very easy to fit and mold to the mouth. It is comfortable and gives a snug fit without giving any pain or discomfort on the gums. It is nice and hard once it hardens after molding and seems like it will hold up well. It is very easy to remold if you don’t get it quite right the first time. Just follow the tutorial and molding is pain free and easy to do. This is great for kiddos who are in the teeth losing stages and need to change up mouthguards often
Trustpilot
1 week ago
2 weeks ago