Custom designed for the Yamaha S03, the YBS03 Signature Series Keyboard Bag is padded for protection against impact and comes equipped with adjustable backpack straps to make carrying your keyboard effortless. Unlike other keyboard bags that may be too big for the S03, the Yamaha exclusive YBS03 bag is the perfect fit and offers optimum protection for your valuable synthesizer.Signature Series bags are custom-designed to fit Yamaha's flagship synthesizers, digital pianos, and keyboards with world-class protection. Offering the same quality materials used in the Artiste and Virtuoso Series, the Signature Series adds imperative traveling features such as tough, inset wheels and the Hands-free Towing System.