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Swimming Goggles B-Fast 900

Sale price: $39.99 Regular price:
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Sale price: $39.99 Regular price:

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Model: 8547681

Product Videos

Product Features

A photo of the Swimming Goggles B-Fast 900 in use

Swimming Goggles B-Fast 900 is designed for training and competition racing. Developed with Fabien Gilot, Olympic champion. Suitable for triathlons.

B-Fast goggles are designed for advanced swimmers. EXCLUSIVE INNOVATION: The micrometric nose bridge adjustment and the compact design provide perfect stability.

Field of view

Very wide field of vision 135<X<150°.


Full stability thanks to compact size and hydrodynamic shape of the lenses.


Micrometric nose bridge adjustment, split head strap with rear adjustment.


Anti-fog treatment on the inner surface of the lenses.


Very flexible seals with a great adaptability to fit the face.

Product Lifestyle Image Gallery

Image Gallery

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black 

Swimming Goggles B-Fast 900,black

Product Customer Reviews

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Swimming Goggles B-Fast 900,black
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It was a high-end swimming goggle with a good fitting but even with proper care on the inside of the goggle, it was found to have scratches after 5 to 6 weeks of usage. Nevertheless, it could be exchanged for a new one and it causes inconveniences for me to go to the shop for exchange and it's ready a very discouraging. How your shop can prevent such defective products for improvement.

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The goggles will be fine for one summer season

I am a weekend outdoor person always interested in new products at a fair price

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High-Quality Goggles for Advanced Swimmers

This goggle is amazing! I use it regularly for my high-intensity training as well as for prestigious competitions and it never disappoints me. My favorite feature of this goggle is the micro-metric nose bridge adjustment system, where you can adjust the nose bridge specific to your face! You can only find this feature in this goggle!! The silicone cushion also makes the goggle very comfortable that you might not realize that you are wearing one. Even better, with the same anti-fog treatment, excellent stability and hydrodynamic shape, you can get this goggle at a fraction of the price of other brands! Love it!

Hello Raymond,

Thank you for supporting our product. We appreciate your insight and we are happy to hear that you got a great experience with our goggles.

Your feedback motivates us to maintain or even strive for better product quality.

We are looking forward to seeing you again.

Thank you.

Stay healthy!

Alyson Ng
Decathlon Hong Kong Watersports Team (Service)
Great Goggles

These are great Goggles have been using it for a while now and so far so good, keeps water out and clear. Would highly recommend these.

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Comfy and good quality.

Very good for under water, great quality and very comfortable!

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Good Goggles

good price and have lasted well

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Best beginners competitive goggles

Great product great price excellent usage

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Comfortable Fit

Good for competitions with excellent peripheral vision without leak and fogging.

BEST gone WORST to be continued....

ORDER ID - 1927444 Thanks for replying to my review pearl But as i have already mentioned in my review below that i am truly aware of the fact that the variations in the temperature and other external factors are the cause of the fogging issues in the swimming goggles which is why i even bought the ANTI FOGGER MARKER from the decathlon website just after a month usage of these goggles in the ORDER ID- 2038402 to resolve the issue as instructed by customer care which you can check. But that too didn’t help. My concern is only that ultimately problem should have been resolved after buying the most expensive and professional googles as claimed on the website. But one bad experience hasn’t stopped me from shopping at decathlon. Best Regards.

Hello Sanyam,

If you are still facing an issue with the fogging of the goggles, please have it exchanged at a Decathlon store closest to you to help you in your swim practice.

Pearl D'Souza
Digital Leader | Swimming
Decathlon Sports India
Adjustable nose notch for better fit

Fits nicely and water tight. Comes with a hard plastic casing for goggle storage which is good, but I do not know the function of the clip on the headband beside the strap adjustment .

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Hi Wing!

Thanks for your review of our swimming goggle, the 900 B-FAST Swimming Goggles - Black Red, Mirror Lenses - (8547681). Reviews like these help us improve and provide feedbacks on our Decathlon products, and we are always thankful for them!

These pair of goggles are fit for those who like speed and comfort, as it is very light-weight and has plenty of customization. The function of the clips are actually keeps the straps in place. By removing it, you can actually replace the straps to the white color one (included in the packaging) as the goggles are sold with the black strap fitted on. It is really up to personal preference of which colored strap you prefer.

Thanks once again for the feedback, and thank you for bringing Nabaiji (Decathlon) along with you on your swims! :)

Stay healthy, by being sporty!
Syahmi Jalil | Sports Advisor @ Decathlon Singapore Lab
Very Nice Product

Worth buying

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its not antifogg

this is good, the only problem is its not anti fogger, it create so much of fogg while swimming that you can't see outside.

Hello Anand,

Thank you for rating the BFAST swimming goggles. Your feedback is important for us to improve our products year on year.

I apologize for the bad experience that you have faced with the swimming goggles. Ideally, due to the difference in temperature of the water, your body and the air, it is inevitable that your swimming goggles fog up. In this case, you just dip them in water and let it air dry. Do not touch the lens of your swimming goggles with a cloth or your finger to clean it as this will disturb the anti-fogging layer.

If you still have the anti-fogging layer, you may use the anti-fog marker which will reinforce the layer and last you every 2 hours of swimming practice. Here is a link to it:

I hope this helps. I stay available in case you have any other queries. Have a good day.

Pearl D'Souza

Digital Leader | Swimming

Decathlon Sports India

Good but

Bites for competition and training after some days got scratched and not getting foggged please help me out

comfortable and leak proof

These are the most comfortable goggles I have ever tried. Delighted with my purchase

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Good goggles

It’s a better googles than the previous ones I purchased ..

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Hi Vincent!

Thank you for your fantastic feedback for the 900 B - FAST Swimming Goggles - Black Red, Mirror Lenses!

Do you know that the goggles that you just purchased is FINA approved? In other words, it is certified approved for use in olympics by the international water-sport federation, FINA.

And Fabien Gilot, the French Swimming World Champion athlete (5 times) who won 3 olympic medals is the one who designed this pair of goggles! He just joined Nabaiji Decathlon board team last year.

Impressive isn't it? You bet! Here at Decathlon, all of the employees are sport-lovers. And when the one who designs the products are the sports practitioner him/herself, we would be able to relate closely with our customers and understands what they expect when buying our products. Having your trust and confidence in our products is our goal.

See you around soon Vincent!


Swimming Sports Advisor | Decathlon| Nabaiji | Joo Koon
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Additional Product Information



  • 100% Polycarbonate


  • 100% Rubber - Thermoplastic


  • 100% Polycarbonate


  • 100% Silicone


  • 100% Polyamide


  • 100% Polyoxymethylene

Patented innovation

Are you looking for swim goggles that are tailored to fit your face, completely watertight and that do not move as you swim, dive or tumble turn? B-FAST goggles are the answer with their simple micrometric nose bridge adjustment system. This system lets you fine tune the spacing of the 2 lenses, using either the screwdriver provided with the goggles or the built-in tool on the back buckle.


B-FAST NABAIJI goggles are training and competition goggles approved by FINA (international swimming federation).


The appearance of fog depends on several factors, the difference in temperature between the body and the water, humidity levels, etc. Wear due to friction is one of the main causes. If your goggles fog up, dip your lenses in the water and a protective film will re-form. After a certain amount of time it is normal for the performance of the anti-fog coating to be diminished. We offer an anti-fog marker that reactivates an aging anti-fog treatment and makes your goggles last longer.

Care - precautions

We recommend: - rinsing your goggles (only if necessary) by simply dipping them in water - avoiding directing powerful jets of water at the inner surface of the lenses. - storing the goggles in their case after each session to prevent damage to the lenses (on the inner surface as there is an anti-fog coating and on the outer surface to prevent scratches) - not exposing them to temperatures of over 140°F DO NOT TOUCH/RUB THE INSIDE OF YOUR LENSES

Choice of size

The watertightness of the swimming goggles is dependent on the proper fit of the skirts with the shape of your face. Before purchase, we advise you to do the "suction" test without the strap. If the goggles stay on the face by themselves via slight suction, the product will be watertight during your swim. This also enables you to spot any areas of discomfort or annoyance when the model is on the face. 1-size model with micrometric nose bridge adjustment

How to adjust your goggles

These swimming goggles mold to the morphology of your face without needing to be excessively tight. Goggles that are too tight can cause discomfort, leave marks and even create water inlet holes. It is not necessary to press against the lenses with your hands, a light suction effect is usually enough for swimming sessions without water inlet holes. The straps ideally should rest 0.8" to 1.2" above your ears. This position will optimize the grip and comfort of the goggles.

Lens tint

The color of your goggles should be suited to your swimming location and its lighting. If you practice outside or in a pool with harsh lighting, prioritize goggles with smoky lenses to limit the glare for greater comfort. If, however, the pool is quite dark with low lighting, winter evenings for example, use clear lenses. The B-FAST swimming goggles are available in different lens tints.

Uv protection

Complies with standard: Q/BT 4734 - 2014, all the Nabaiji swimming goggles protect against harmful UVA and UVB rays when used normally, regardless of the lens tint. Looking directly at the sun is dangerous and can lead to irreversible eye damage.



Product testing

The Nabaiji swimming goggles comply with the EPI regulation 2016/425. Our products are tested and approved by independent laboratories. Goggles intended for swimming at the surface

Storage instructions

After use, store the goggles in their case. Important: do not touch the inner surface of the lenses as this could destroy the anti-fog treatment

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