The YUSEN Tough Rubber Bouncy Tennis Ball is a durable and floatable toy that is perfect for large breeds. Made from special rubber that does not sink in water, this ball allows for hours of fun with your dog. It is easy to toss and retrieve, making it a great choice for games of fetch or toss. The YUSEN Tough Rubber Bouncy Tennis Ball is available in a standard tennis size that is perfect for chewing, playing, or chasing. Your satisfaction is guaranteed with the YUSEN Pet Products Lifetime Warranty.