Our Small Size portable dog paw cleaner is perfectly sized for small & medium sized dogs: it measures 4.33 inches tall and 3.54 inches wide. Our Large Size portable dog paw cleaner is perfectly sized for medium & large sized dogs: it measures 5.91 inches tall and 3.94 inches wide. How to Use： 1.Add some water to the dog paw cleaner Be careful not to pour too much water to prevent splashing. 2.Put the dog paw into the cup Turn left and right to make the silica gel brush clean the paws thoroughly. Repeat for the other three paws. 3.Pour out dirty water. Clean products, let them dry until they are reused.