A whole new way to play your Boomwhackers Tuned Percussion Tubes like a xylophone! Used as a carrier, it accommodates 8 Boomwhackers Musical Tubes, a pair of Boomwhacker Whacker Mallets and a Whack-a-Doodle-Doo! Songbook. Two or more can be combined end-to-end for a wider range of play. Made of cotton, elastic and hook-and-loop fasteners. *Tubes, mallets and songbook sold separately.