Green Tones Hohner Slide Whistle (3780) A slide whistle is one of the most entertaining introductions to music that a child can experience By simply blowing on the whistle and using the sliding internal bar, children will make the whistle create sounds that are high, low and everywhere in-between A great exploration of notes and melody creation that can sound super silly or really beautiful - its up to you! A slide whistle is one of the most entertaining introductions to music that a child can experience The whistle measures 7.5" long Chemical free Rubberwood with a non-toxic, clear-coat finish over German-made, VOC free water-based paint