This is a conch shell whistle made by processing a sea snail shell to resemble a conch shell. Set of 5. A squeaker is installed in the mouthpiece, so it makes a cute "peep" sound when blown. How about using it as a bear whistle for mountain climbing! Regarding the production, it has been thoroughly washed, disinfected, and processed, but it is a natural product. Please refrain from purchasing if you are sensitive or seeking perfection. It is also listed on other sites, so please understand that it will be canceled when sold out. Regarding transactions, no claims and no returns are accepted. SPEC Wooden mouthpiece Length: Approximately 7-10cm Width: 3.5-6.5cm Weight: Approximately 20-75g