Made of carbon fiber composite polycarbonate with durable construction. Waterproof and easy-to-clean body. Much more bright sound compares to wooden ukuleles. Side sound hole design ensures better self-resonance during playing. Super lightweight (1.25 lbs.) and thin body (2 inch). Designed to be your travel partner and ignore temperature and humidity. With the arched back, radius fretboard and cutaway body, this uke is designed for all-level players.NOT compatible with wound strings or strings containing metallic compounds. US warranty and customer support.