Features: 1.Made of good quality TRP material, non-toxic, environmental friendly and durable. 2.The pet cooling toy is designed to reduce heat for the dog in hot summer days, with persistent refrigeration and freezing. 3.It can help the dog molar and clean his teeth, relieve pressure and relieve boredom, so as to prevent the dog from biting the furniture at home. 4.You can fill in food, which will fall out during playing, improving pets's interest to play. 5.Lightweight and portable, suitable for both indoor and outdoor playing. Specification: Features: 1. Made of good quality TRP material, non-toxic, environmental friendly and durable. 2. The pet cooling toy is designed to reduce heat for the dog in hot summer days, with persistent refrigeration and freezing. 3. It can help the dog molar and clean his teeth, relieve pressure and relieve boredom, so as to prevent the dog from biting the furniture at home. 4. You can fill in food, which will fall out during playing, improving pets's interest to play. 5. Lightweight and portable, suitable for both indoor and outdoor playing. Specifications: Material: TRP Color: Blue Outer Diameter: Approx. 10 cm/ 3.94 inch Inner Diameter: Approx. 8 cm/ 3.15 inch Packing List: 1 x Dog Toy