Shoulder bag for carrying UniValve, BiValve-30 and Flexi-50 heads. Has extra pockets on the sides and top for cables, footswitches and other accessories. Has a rigid bottom panel to better support the amplifier's weight, a padded shoulder strap, and extra padding and reinforcement on the bottom front and back to protect the knobs and switches. A must for any THD head owner. Also makes a great gym bag or overnight/carry-on bag for short trips.