The Boomwhackers Boomophone XTS Whack Pack combines the new XyloTote Tube Holder, C Major Diatonic Scale 8-Tube Set with mallets, Whack-a-Doodle-Doo! Songbook, and Tube Caps. Now you can play the Tubes like a xylophone and roll it all up to tote it wherever you like!The XyloTote Tube Holder holds 8 Boomwhackers and lets you play the tubes horizontally, like a xylophone. 2 or more can be combined end to end for a wider range of play. Serves as tote to hold tubes, mallets, and book. Made of cotton, elastic, and hook-an-loop fasteners.The mallets are 11" long and have black rubber heads.The Whack-a-Doodle-Doo! Songbook contains children's songs which have the musical notes color-coded to match Boomwhacket Tubes. Includes familiar tunes such as "Old MacDonald" and "London Bridge."