Make fetch happen® with the Chuckit!® Whistle Flight™. This unique fetch toy creates a continuous whistle sound as it flies through the air, keeping a dog interested and engaged during fetch. Specially designed reeds create the whistle sound as wind whips through the whistle chambers when thrown. The Whistle Flight is made of lightweight, flexible natural rubber that is gentle on pet parents hands and a dogs' mouth. The Whistle Flight was carefully engineered to securely house the whistles within the flyer to provide the best sound performance as well as keep a pet safe. Features: -Makes whistle sounds as it flies through the air -Keeps dogs interested and engaged during fetch -Create whistle sounds as the wind whips through the whistle chambers -Made from durable rubber -Withstands rough play -Suitable for a wide variety of dog breeds -Dimensions: 11.1in x 10.6in x 1.2in.