MAJORDOG Squeak Toys - SET C (For Doggie in Medium to Large size) Durable Fabric (Special, heat-set fabric) - Made in Germany The first TV certified Dog Training Toy.All of the training articles were designed, tested and TV-certified during a development phase lasting several years in order to guarantee the highest standards for quality and function. Major Dog training products for dogs were developed through intense collaborative efforts between trainers and dog owners http://www.youtube.com/watch?v=l-Pyda8GlOk