Foam wind shields prevent disturbing sounds that arise from wind, rapid movements of the microphone pole or sensing from a short distance. They are made of special foam (polyurethane foam with open cells) and do not cause disturbing resonances or affect the directional characteristics of the microphone. The only negative is a slight attenuation of frequencies in the highest band. Wind noise attenuation is approx. 18 dB, measured without electrical filtration in a wind speed of 20 km/h created by a quiet fan. Attenuation at a frequency of 15 kHz is approx. 2 dB. WNS 100 is designed for Series 100, Series 180, KM A and KM D microphones. The diameter of the wind shield is 45 mm. It is produced in black, red, green, yellow, blue and white.