The flexible foam pads are designed to enable marching percussion instruments to be played at a low volume with similar resistance. The Tenor Drum Mutes are easy to place and remove with a single finger divot. Marching Tenor Mute sets are available in small (2x6-in., 8-in., 10-in., 12-in. and 13-in.) or large (2x6-in., 10-in., 12-in., 13-in. and 14-in.) sizes.