The white Hush Lav Lavalier Microphone Quieting Sleeves from Garfield come in a pack of 15 and are designed to stabilize the microphone and minimize noise associated with excessive movement and contact. Although the Hush Lav sleeves are a perfect fit for the Sanken COS-11 and Countryman B3 and B6 Lavalier Microphones, they are a universal solution for most small lavalier microphones.