Other Bicycling Wind Noise Reduction Products

There are now six bicycling related wind noise reduction products on the market.  In addition to the five products pictured below, a product called 'Helmet Angel' entered the market during 2018.  Please visit the respective websites (links are included in the abbreviated summaries below) for more information and / or possible product updates.

Whether you purchase a Cat-Ears / AirStreamz product, or another wind noise reduction product, we believe that reducing excessive wind noise makes bicycling safer and more enjoyable.

Available Products

Slipstreamz (2006)


Based in South Africa, made in China, and retail for about $10.00.


Slipstreamz makes no decibel related performance claims.

"Slipstreamz Spoilers are unique in using the front strap of your helmet to smooth the airflow over the side of your head and ears for improved cycling performance, enjoyment and safety."

 - Slipstreamz website.

Please visit the Sipstreamz website (www.slipstreamz.com) for more information.

Windrush (~2008)

Windrush Wind Noise Reduction

Based in the United Kingdom, made in the UK, and retail for about $30.00.


Windrush claims to reduce wind noise by 20-25 decibels. 

"Reduce wind noise by 75%. Hear approaching vehicles. Hear conversations. Hear your music. Hear everything except the wind. No muffling of voices or other sounds. Interconnected cells allow the passage of other sounds through to the ear... unique Air Still™ material around the ears counters wind noise yet allows all other sounds through..." - Windrush website.

Please visit the Windrush website (www.windrushgear.com) for more information.

Windfree (~2010)

Windfree Wind Noise Reduction

Based in Sweden, made in China, and retail for about $35.00.


"According to wind tunnel tests at KTH, Windfree products can reduce the noise caused by wind by as much as 20 decibels." (KTH Aeronautical and Engineering Sciences, Royal Institute of Technology, Stockholm, Sweden) - Windfree website (i.e. up to 75% reduction)


Windfree comprises a foam with a cell structure that allows sound to pass but not wind.  We have simulated the ears of fast animals, which are protected by fur." -  Windfree website.

Please visit the Windfree website (www.windfree.se/en/home) for more information.

Cat-Ears / AirStreamz (2012)

AirStreamz Wind Noise Reduction

Based in the United States, made in the USA, and retail for about $16.00. 

"Cat-Ears reduce perceived wind noise by 60% to 75%.  While the amount of perceived wind noise reduction can vary (based on speed, turbulence, etc.), we stand behind our products as the most effective strap devices on the market." - Cat-Ears website

"AirStreamz™ are recommended for casual to competitive cyclists.  Developed through aeroacoustic research, AirStreamz are made from proprietary pile materials that dampen, dissipate, and deflect oncoming wind while significantly reducing the intensity of wind noise producing turbulence."  - Cat-Ears website

Wind~Blox (2013)


Based in the United States, made in Pakistan, and retail for about $18.00. 

Wind~Blox claims to "stop over 80% of bicycle wind noise" and during 2015, they issued a press release claiming a "25.2 dB (80.2%) wind noise reduction".  Given these 'too good to be true' claims, we evaluated the 'With Wind~Blox' and 'Without Wind~Blox' audio files from the Wind~Blox website (using professional audio analysis software).  Based on the results, the correct reduction is <60%.  Consistent with our results, the Adventure Cycling Association noted: "ACA's opinion is (the Wind~Blox) product blocks +/- up to 50% of wind noise".


Click here for more information about Wind-Blox / related business practices.

Helmet Angel (2018)


Based in the United Kingdom, made in the UK, and retail for about $20.00.


Helmet Angel makes no decibel related performance claims.

The product is similar to a wind deflecting design that was developed during the early 1990s (see below). "Hear more clearly and react more swiftly to what is happening around you when you cycle... Researchers found that the shells made a massive difference in enabling riders to hear sounds behind them" - From the Helmet Angel website

Please visit the Helmet Angel website (www.helmetangel.com) for more information.

Discontinued Products

Silencer (1992)

This product appears to have been developed during the early 1990's.

Silencer - "Reduce Wind Noise"

This appears to be the original hard plastic wind deflector with razor style grip for secure helmet strap attachment.  Made from hard plastic, the sound blocking aspect of this design would be our biggest safety concern.

The Helmet Angel product is very similar to the Silencer.

Windfoil (2004)

This product appears to have been available from 2004 until about 2008.

Windfoil - "Hear The Difference"

"Wind noise is created by air rushing past the folds of the ear. Windfoil's lightweight polymer surface uses patented MicroVents to create a laminar airflow. This prevents unwanted wind noise while permitting ordinary sound to pass through. WindFoils easily clip to your helmet straps and fit comfortably over your ears." - Windfoil

Cycling forum comments regarding the Windfoil were mixed.

D:flekt (2015)

This product appears to have been developed / prototyped during 2015.

D:flekt - "Wind Noise Reduction"

"Wind noise generated when cycling is not only annoying but reduces your ability to hear clearly when moving. The faster you go, the worse it gets. D:flekt helps greatly reduce the effects of wind noise on your hearing so you can hear what's going on around you or hear the feedback from your favorite cycling app or music without having the volume at dangerously loud levels." - D:flect

D:flect had an introductory website - with no purchase options. 

Several Homemade Versions

Reducing wind noise makes cycling safer and more enjoyable.

Cat-Ears / AirStreamz is a leading manufacturer of aero-acoustically designed passive wind noise reduction products.  Tested and recommended by respected publications and professionals, Cat-Ears / AirStreamz are the highest-rated and best-selling products designed for serious cyclists / outdoor sports enthusiasts.  Our products are 100% Satisfaction Guaranteed and Made in the USA.

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