KONG Tires is a durable tire chew designed to provide the ultimate chewing experience. The uniquely shaped sidewalls and thick outer tread create a super durable, elastic barrier. The sidewalls are designed to double up and rebound when compressed to provide an active chewing experience, and the Tires are perfect for bouncy games of fetch. Key Features: Tire shaped toy made of durable KONG Rubber for determined chewers Fill inside wall with Snacks™ or Easy Treat™ to extend playtime Unique treat-gripping design