The Windjammer™ first introduced by Rycote is a high quality synthetic fur-cover, which provides the highest possible protection against extreme wind-noise. When using a Windjammer™ fitted over a Stereo Windshield, up to 50 dB of wind-noise attenuation can be achieved, producing excellent standard audio recordings. It’s made from materials which are specially designed and manufactured for the purpose, and as a result has virtually no adverse effect on High-Frequency.