1.360 DESIGN - Patent pending design allows easy cleaning of the entire mouth with just a few swipes. Pet owners can finally provide a thorough teeth cleaning for their dog or cats' with ease. 2.FOR SMALL & LARGE PETS - Compact design works well on smaller dogs, cats, and puppies. Also works great for larger dogs as long as your finger can reach their teeth. Note: it ma not work as well on extremely small pets, such as toy breeds. 3.FITS THIN & THICKER FINGERS - JUST ADD WATER - Adding a few drops of water inside makes the silicone expand for larger fingers, and creates a seal for smaller fingers - no more slipping off in your pet's mouth 4.SOFT AND GENTLE FOR SENSITIVE PETS- Silicone bristles are softer than traditional bristles, but abrasive enough to remove plaque. The gentle nature of fingerbrushes tend to be more accepted by pets. 5.SAFE & EFFECTIVE - 100% Silicone is BPA and Phthalate-free.