Features Floppy outside, durable and strong rope inside Squeaker to entice play Varied textures for added fun Minimal stuffing means less mess and more durability Comes in 2 sizes Your dog will love the KONG Dog Floppy Knots Hippo for fun and entertainment. It features a floppy outside and a durable and strong rope inside. The internal knotted rope skeleton satisfies your dog's natural instincts and the minimal stuffing means less mess and more durability. It also has a squeaker to entice play. The KONG Dog Floppy Knots Hippo has varied textures to keep your dog entertained and interested. It comes in 2 sizes - small/medium and medium/large.