JW Pet ProTEN™ Hol-ee Roller Dog Toy is an ingenious, patented honeycomb, web design plus natural, tough rubber gives the Hol-ee toys the ability to offer multiple kinds of fun. With an added durable tennis center, the ProTEN™ Hol-ee Roller Dog Toy provides hours of bouncy playtime. Ingenious, patented honeycomb, web design plus natural, tough rubber perfect for fetch An added durable tennis center makes great for interactive or solo play Made from durable, non-toxic nylon ideal for intense chewers & teething puppies