Never used. It was just kept in the room. This reflection filter achieves high sound absorption and light weight. You can easily record anywhere. ■ Reflection Filter ■ X Portable Vocal Booth ■ Polyester Foam ■ Color: White An entry-level reflection filter focused on home recording use. While the basic design structure is the same as the US patented Reflextion Filter Pro, the reflective surface uses a single layer of polyester foam, similar to the Project Studio Reflextion Filter. The material on the back of the filter and the stand mount hardware have been improved to achieve lighter weight and durability. It is mounted on a microphone stand by attaching it to the top of a straight microphone stand.