Chuckit! Fetch Medley 3 pack is a Walmart Exclusive Fetch Medley premium Chuckit!® Ball dog toy. Included are the Whistler Fetch Ball the Ultra Ball and the Crunch Ball. Each are compatible with all medium Chuckit!® Launchers. The Crunch Ball is a durable TPR ball made with a proprietary method that produces an engaging crunch sound to satisfy a dog’s curiosity. The Ultra Ball is made of durable rubber yielding an ultra bouncy exciting fetch experience on land or on water thanks to lightweight bouyant design. Made from durable and lightweight material the high bouncing Whistler Ball has Four holes which produce a whistle sound as the ball soars through the air. Made with durable natural rubber material.