U 70 S Skin Udu XL tunable H 43 cm diam. 31 cm, with floor base The Skin Udu is the highlight of Schlagwerk's Udu line. It offers a huge amount of features. In addition to the lateral sound hole, which produces soft, harmonious bass tones, it also has a thin, attractive natural skin. The combination of oriental drum sounds with soft, low-frequency bass tones creates inspiring sound experiences.