Fangrui Product Details 1. Description: 2. New High Quality, High Style. 3. The Pet Grinds The Teeth And Leaks The Food Ball. 4. Specifications: 5. Material: Rubber (s No. M: Hard Silicone, L: Soft Silicone) 6. Color: Blue, Red, Yellow, Green, Orange (optional) 7. Diameter: S: 7.5 Cm / 3", M: 11 Cm / 4.3", L: 12 Cm / 4.7" (optional) 8. Weight: S: 49 G, M: 110 G, L: 191 G (optional) 9. Size Recommendation: Small Dogs: Adult Weight Less Than 10 Kg, Height 40 Cm / 15.7", Recommended S-slipping Ball; Medium-sized Dogs: Adult Weight Less Than 11-30 Kg, Height 41-60 Cm / 16.1-23.6", Recommended No. M Missed Food Ball; Large Dogs: Adult Weight Less Than 30-40 Kg, Height 60-70 Cm/23.6-27.6" Or Less, Recommended L-leaked Ball 10. Help Your Pet Maintain A Healthy Diet. 11. Train Your Pets To Use Their Claws. 12. Interact With Your Pets And Have Fun With Them. 13. It Can Make The Pets Avoid Fast Swallowing While Playing, Adapt To More Sizes Of Snacks And Pet Dry Food, And Control The Speed And Difficulty Of Food Outflow. 14. Super Food Power, Continuous Attraction, So That Love Pets Will Not Be Bored. 15. The Veneer That Regulates The Food Can Adjust The Difficulty Of The Food Spill, And Greatly Enhance The Attraction. 16. The Rubber Has Good Elasticity And Can Be Inserted Into Snacks In The Ball To Enhance The Dog's Interest. 17. Package Included: 18. Missing Food Ball*1 19. Notes: 20. We Provide Clear Pictures, Measurements Where Possible. Please Check As Much As Possible To Make Sure The Item Is The One That You Need. 21. Please Allow 0.5-1 Inch Difference Due To Manual Measurement.(1 Inch=2.54cm) 22. The Color Of The Actual Items May Slightly Different From The Listing Images Due To Different Computer Screen, Thanks For Your Understanding. 23. Thank You For Understanding.