Features: High density, , designed to filter out and absorb unwanted noise and reflections. The filters have good noise reduction and light weight.The design of the opening on one side can prevent the divergent sound from during the recording process, the reception is more specific, and the recording is clearer and true. Noise Reduction: Use high quality sound-absorbing sponge, reflecting surrounding noise, so that your mic can be isolated in a quiet space to record your voice while singing or recording. Function: Effectively reduce interference of indoor and outdoor environmental noise during recording. Portable: easy to carry and mount on all kinds of tripods and brackets, very convenient. size: Diameter . 19cm Material: sponge + metal colour: black Package Contents: 1 x Microphone sponge cover Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.