Premium rubber material,non-toxic and environmental,durable. The design of thorns helps dog clean its mouth and massage the gums and tooth in the process of playing. Help dogs consume the energy and ease anxiety when they playing,and prevent clothes and furnitures being damaged by dogs. The chew toy offers different stimulations to dog by its limber grooves and soft thorns,and stimulates your dog to bite it. Ideal for various indoor and outdoor activities,the toy helps premote communication and affection between you and your dogs in the course of playing.