This dog teething pet toy, the outside is made of polyester the inside is filled with doll cotton, the sides are made of drug-resistant teething rope knots, The built-in sounding device emits a flute when your dog bites down on the product to increase your dog’s interest in using the product. It is a great comfort toy when you do not have time for your dog, since it can relieve the dog’s depression, boredom and anxiety while preventing him from damaging furniture, increasing exercise as well as maintaining weight and health!