The KONG Rewards Bubbles is a rolling, bouncing treat dispenser that challenges dogs' scavenging abilities, keeping them engaged and mentally stimulated. Its flexible durability and gentle bounce and roll action make it perfect for quiet treat time, while the round shape encourages nose-and-paw nudging as treats tumble out. Rewards Bubbles is also designed with translucent material so dogs can see the rewards inside! You can fill it with treats or up to one cup of kibble for long-lasting fun. It's not only easy to load but also simple to clean — just hand wash it with soap and let it air dry.