KONG Signature Balls are a super durable and long lasting toy, ideal for games of fetch and retrieve. Higher bounce than tennis ball Durable material Ideal for outdoor play Available in S-L Durable ball for long-lasting fetching fun. Higher bounce than tennis balls for extended playtime. Long-lasting toy that satisfies instincts to chase and retrieve. Ideal for interactive games. Great for outdoor play sessions. The KONG Signature ball brings ultra-durability and an uber-bounce to games of fetch and retrieve. Dogs that are driven to fetch will delight in play sessions with the KONG Signature Ball and with a durable construction its sure to last for those dogs that can never get enough retrieving fun.