Ruffwear Gnawt-A-Stick - Bounces erratically for an engaging game of fetch, and it floats upright to remain visible and easy to retrieve. Engineered to float at an angle for increased visibility. Made from natural rubber, a renewable, sustainable resource. Faceted surface for gum-massaging. Features: Durable, chew-resistant Faceted surface for gum-massaging Made from natural rubber