The JW Hol-ee Roller is a fun, versatile puzzle dog toy that allows dogs to play in various ways! Made from durable, soft, and stretchy natural rubber, the Hol-ee Roller features a unique open design that makes it easy to fill with your dog's favorite treats, kibble, small toys, ice cubes, or anything else you can think of to create a mentally stimulating puzzle experience for dogs. As dogs work to remove treats of different shapes and sizes from the Hol-ee Roller, they develop problem-solving skills and enhance their mental abilities. Natural rubber is gentle on a dog's gums while it chews and teethes. The Hol-ee Roller can be used in various sizes as a training aid or for fetch, tossing, tugging, chewing, and puzzle treat time. It is a versatile toy suitable for dogs of different ages and breeds. Ships in assorted colors.