The three different sizes give the user freedom to experiment with a variety of sensations. The small size is for those wishing to take their first step into anal exploration. The medium and large sizes provide the perfect way to take this exploration a little deeper or they can used together to create a dual sensory experience. With their ergonomically designed shafts and strong. steady vibrations. the versatile Nexus G-Play range has it all for men and for women. All sizes are splashproof. Lengths of the plugs are: small. 2.36 in.; medium. 2.87 in.; large. 3.15 in. AAA battery included.