Something for you both! The Lovers' Arouser is super stretchy to fit most. The ribbed sleeve slides over the shaft of the penis and the 2.125in x .75in bullet fits inside the dolphin. The dolphin has a small row of nubs and a tantalizing snout to give her added pleasure during intercourse. The sleeve will help maintain a firmer erection for longer periods. Requires three watch size batteries, six are included for your convenience. Dive into action!