PileTech Materials Engineering

To reduce unwanted wind noise, one needs to match acoustic material(s) to the specific characteristics of the oncoming wind. What’s more, the product’s final shape can affect the performance of its materials. A precise understanding of the aero-acoustic characteristics, such as its performance at certain frequencies, is essential.


Combining materials with different physical properties allows us to create the most effective WNR (Wind Noise Reduction) products available.  We select materials and material coatings based on:

  • WNR performance characteristics that effect fiber behavior in turbulent air flow, such as fiber density, length, bending strength, resiliancy,  moisture regain, and elasticity

  • Acoustic characteristics such as sound transmission / transparency

  • Comfort characteristics such as air permeability, moisture wicking, heat transmission, hypoallergenic, and non-itch

  • Durability characteristics such as tensile strength, chemical resistance, abrasion resistance, and UV light resistance

  • Style characteristics - Visual "appeal," surface texture, tactile "feel," shaping, etc.

  • Production characteristics - Seam strength / distortions, pressing, bond ability, dye absorption, etc.s.

For example, turbulent air flow, when passing over a pile fabric material, experiences a slight reduction in energy as the pile fibers deform and act as tiny "shock absorbers."  In the immediate vicinity of the fabric, these "shock absorbers" reduces the intensity of rotational (vortex) air flow, which in turn reduces the air pressure fluctuations we perceive as wind noise.  Material properties of the fibers - such as stiffness, elasticity, etc.  - as well as the properties of the fabric - such as  fiber density, fiber length , porosity - have major effects on the effectiveness of WNR.

We work closely with fiber, fabric, and coating engineers to meet Cat-Ears Critical to Customer product requirements.

Airstreamz™ have have been designed with high moisture wicking so they stay cool, dry, and comfortable on warmer days... as they provide unsurpassed wind noise reduction.

Material testing lab at our manufacturer.

Faux Fur / Legacy Materials Engineering

Our original testing followed Thomas Edison's approach when he invented the light bulb. Lots of negative and less than satisfactory performance  as we road tested iteration after iteration after iteration.  Then we discovered the unique effectiveness of certain fabric materials, which led to testing nearly 100 different faux fur combinations of pile length, fiber density, shape, etc. We have since tested many of these original materials using our advanced testing.  

We stand behind our products as the most effective devices of their kind on the market.

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

Cat-Ears, LLC

PO Box 21

Cedaredge, CO 81413




Mon - Fri: 9:30am - 4:30pm | ​​Closed Saturday and Sunday

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