Tough By Nature Chompions toys are for aggressive chewers and high-energy dogs. These safe and sweet-smelling chews have nubs and grooves to help clean teeth. Made of durable, 100%-natural rubber. For aggressive chewers and high-energy dogs, Chompion dog toys take first place in fun and long-lasting durability. Made of 100%-natural rubber and infused with vanilla, these safe and sweet-smelling chews have nubs and grooves to help clean teeth. Resilient rubber composition rolls and bounces, adding excitement and intrigue to pets’ playtime fun. Assorted bright colors may vary. Heavyweight measures 7 1/2"