AUCH 3Pcs Wooden Animal Whistle/Bird Call Early Educational Tool, Random Color Length of whistle is about 9.8cm. It is very cute, you can use it as key chain. Environmental and good high quality solid wooden and lacquer material. It doesn't have taste. Voice doesn't harm kids' eyedrum. Package included: 3 x mini animal whistle(random color); Recommended Age : Over 2 years old.