Measuring at 3, 4, and 5 inches, this set is shaped and sized to help backdoor beginners gently expand the boundaries of their anal experience. The classic tapered tip slides right in, and the firm yet flexible material and curved rocker base make these plugs comfortable and safe for extended wear. Total Length of Small plug: 3.25 in.; Medium: 4 in.; Large: 5 in.Insertable/Usable Length of Small plug: 3 in.; Medium: 3.75 in.; Large: 4.75 in.Width/Diameter of Small plug: 0.75 in.; Medium: 1 in.; Large: 1.25 in.Circumference of Small plug: 3 in.; Medium: 3.5 in.; Large: 4.25 in.