Hartz® Just for Cats® The Crinkler™ is a 3-in-1 premium play system for cats, featuring a bag that is fully lined with that crinkle sound cats love! It is designed with high quality materials that are soft, yet durable, and includes 4 holes for a game of peek-a-boo, and 3 plush danglers for swatting. The Crinkler also includes our unique blend of Silver Vine and Catnip to help stimulate livelier play. No assembly is required, just prop the frame to create a bag, and when playtime is over, The Crinkler can be flattened for easy storage. This versatile toy is sure to bring out the explorer in any cat, and it is perfect for solo play or multi-cat play!