Nerf Dog Large Rubber Wrapped Bash Tennis Ball Green & Red Dog Toy (2 Pack) Made To Last: Nerf-quality materials allow this toy to be lightweight and durable Weather & Water Resistant: Constructed from food-grade heavy-duty rubber and synthetic felt Interactive: Squeaking sound provides hours of entertainment, and tough rubber exterior challenges your dog. Perfectly Sized: Ball for medium to large breeds Safety Guaranteed: 100% non-toxic, BPA-free, and FDA approved