The 1Pc Sponge Foam Interview Microphone Windscreen Windshield Shotgun Mic Cover is a high-quality foam designed to protect your microphone against wind interference and singers’ spit. It is a universal microphone foam that can fit various microphone brands such as Sony, JVC, and more. The material is sponge with an inside diameter of 1.8cm or 0.71 inches. This product is compact with dimensions of 2 x 2 x 2 cm and weighs 15g. The manufacturer is Generic and the country of origin is China. Overall, this microphone foam is practical and useful for interviews and other recording situations.