Our Grriggles FUNdamental Dog Toys are made of TPR (thermoplastic rubber) for an intriguing and interactive toy that dogs will never want to part with. These FUNdamental Footballs: Have an irregular football shape - making them bounce unpredictably Are made with two distinctive textures for endless chewing fun Floats in water! Promote fitness and dental healthGrriggles FUNdamental Dog Toys are packaged for retail with a backer card. Coordinating FUNdamental toys are available and are sold separately. See items US2152, US2153, US2156, US2155, US2154.See the Specifications tab for product details.