Blow into this bamboo whistle and pull the little stick back and forth to change the tone from a low to high sound. Each model has colorful design of a bird or person painted on it. Carry this fun instrument with you anywhere. These whistles are available in three sizes. Large (7 inches x 5/8 inch), Medium (5 1/2 inches x 1/2 inch); Small which doubles as a keychain Made by local artisans from the city of Iquitos in the heart of the Peruvian Amazon. Models: WHB004