Proprietary foamed rubber interior with Chuckit Ultra Durable Rubber exterior Tough for play, easy to clean Lightweight to glide through the air; gentle enough to catch & retrieve Great for land & water play Chuckit Fetch Pet Toys: Chuckit makes indoor and outdoor dog toys that enrich the human-animal bond and helps dogs and puppies stay engaged. Try our full line of ball launchers, puppy toys, flying discs, tennis balls for dogs, dog chew toys, and more