The Pro-Portable xylophone features Musser exclusive Kelon bars which resist changes in temperature and humidity to maintain tonal quality and dynamic response. The 3.5 octave xylophone has silver powder coated seamless aluminum resonators. With excellent portability features, the xylophone adapts to any environment. Detachable resonators and folding aluminum legs on the wood concert frame make it easy to transport. This xylophone is also available with the Moto Cart frame or the All-Terrain Cart.