Rubber Material : the product is made by extra-tough rubber, good elasticity, bite-resistant and nontoxic,non-abrasive,safe for your sweet dog grinding and cleaning their teeth Tooth Clean: tooth-shaped design, can effectively help clean their teeth and keep their gums healthy. More Entertainment:which can be stuffed with pet snack. Your pets will accept this toy easily and get more surprise while playing. Best Dog Toys for Boredom. Improving Intelligence and IQ Training: This dog toy can easyly attract your pet's attention, help pets' intelligence improving ,and is convenient to train dogs. Color:Blue and Green The toy ball features: ①Unlike most dog chew ball,this Nontoxic Bite Resistant Rubber Toy Balls Designed For your lovely dog! ②It is effectively help clean dog's teeth and keep their gums more healthy.Your sweet dog will be more clever and lively to play with this IQ training balls! Specification: ①Material: Nontoxic Silicone Rubber. ②Diameter: 2.75 inch/ 7 cm. ③Product weight:0.3 pounds Package includes:  2 x Pet toy ball  Note: ①Toy must be larger than the width of your dog's mouth, proper supervision is advised when playing with all toys to ensure no accidental swallowing. ②Color may be brighter or darker due to the different PC display.