JW Hol-ee Roller's Treat Dispensing Dog Ball takes playtime to the next level, easily customizable with a wide variety of dog treats and toys. The Hol-ee Roller's durable, super-stretchy rubber makes it easy to stuff a dogs' favourite treats inside, while the patented, open design allows dogs to safely breathe through the toy for hours of play. As dogs work to remove treats of different shapes and sizes from the Hol-ee Roller, they develop problem-solving skills and increase their mental abilities. The treat-dispensing ball is also effective as a training toy. Available in a wide range of sizes, the Hol-ee Roller is a versatile toy for dogs of different ages and breeds.