The KONG® Squeakair® Ultra Balls bring movement into play: Thanks to the versatile texture, it is not only great fun to catch and retrieve the toy, but also to chew on it at will. The yellow felt does not rub against the teeth - which is particularly gentle on your pet's teeth. The blue rubber material gives way when bitten and releases an exciting squeaker sound. Note: Please never leave the pet unattended while playing. No toy is indestructible. To prevent injuries, the toy should be checked regularly for damage or loose parts and replaced if necessary.