Wenger Travelmaster shell packIntroducing the Wenger Travelmaster shell The Wenger Travelmaster acoustic shell is a portable sound solution designed to bring a consistent and high quality acoustical environment wherever your music takes you. Whether youre rehearsing in school hallway, performing on tour, or adapting to changing venues, the travelmaster shell ensures musicians can hear each other clearly enhancing tone, timing and ensemble balance. Available in the following packs: