Microphones are used in many environments - from reasonably quiet studios to interviews at sporting events with high noise levels such as Grand Prix Racing or live concerts. Microphone Covers are used to ensure an effective barrier is formed to reduce the interference from surrounding noise while making sure acoustic transparency is still allowed. No notches,high density. 1)Package included 1 PCS of microphone windscreens. 2)High Quality Multi color foam for ball shape microphones. 3)Protect your microphone against wind interference and singers' spit. 4)Attention: Just for handheld stage microphones only. Not for headset microphones. 5)2.8" Height x 2.3" Width 11 kinds of color: Black, white, red, blue, yellow, orange, purple, green, brown red, gray and pink