Thomann Flow-Ball, Flow Ball, Exerts a constant exhalation phase in a playful manner, To improve lung volume, For expiratory breathing exercises, Small price - great effect, The FlowBall is a small and inexpensive breath training device, Particularly suitable for young brass musicians due its toy character, A styrofoam ball must be kept in its limbo by the own breathing stream, in order to train a constant exhalation phase as much as possible, Larger lung volume can be achieved through regular and persistent training, Colour: Black@+@+*For hygienic reasons, no returns of this item are accepted (AGB §4 paragraph 5)*