Size: Free, soft strap auto adjustablA great wee gadget to accompany you while strumming a guitar, ukulele, etc.Composite steel balls inside, musical sound with the shake of your handSimply pop the Rhythm ring onto your finger (the elastic makes sure it stays on!) and it adds extra Shiny (a maraca-type shaker rhythm) in exactly the same timing as your strumming hand! It also works really well with cajon or adding a crisp rhythm to your playingMaterial: Plastic + Steel BallColor: Random color, don't accept the specified color.Helpful to train your rhythm,Suitable for every music fan,Polished handle bar is smoothA great thing for develop and improve your music intelligentpackage include:1 x sand shakerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.