Size 4 is about the size of the average size of the erect penis. If you are training for penetrative sex this is a good dilator to use. You should be able to fully insert it, move it side to and take it out without pain at your pelvic floor. We recommend using this one in varying positions, different angles before you go up to the next size..
Length: 5.4 inches
Width: 1.1 inches