It is a noise reduction cylinder designed and processed with high-quality noise reduction sponge. By absorbing and reflecting the surrounding noise through the noise reduction sponge, your microphone can be isolated in a quiet recording space, so that the microphone can specifically record your voice during recording and singing. High density, durable, designed to filter out and absorb unwanted noise and reflections. The pop 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. Specifications: Material:Sponge Sponge Cover Color:Black, Anti-spray Mesh Color:Black,Blue; Sponge Cover Size:Approx.19x16.5cm/7.48x6.5in Option Type:Type A,Type B,Type C,Type D,Type E,Type F; Note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 11x Microphone Sponge Screen