How are windproof capabilities measured for clothing? – WindRider

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In the United States, windproof ratings are often measured in the amount of cubic feet per minute (CFM) of about a 30-mile-per-hour wind that can pass through one square foot of the material. Therefore, a lower number represents more effective wind blocking. Here’s an outline for the practical application of these numb
Wind-resistant versus windproof follows the same lines as water-resistant versus waterproof.