When it comes to penis size, bigger doesn't necessarily mean better.
According to a new study, the average single woman prefers a penis that is "only slightly larger than average".
The study, conducted by researchers from the University of California and the University of New Mexico, asked 75 female participants to look at 33 different sized 3D printed models of penises.
The women were asked to chose the penis they would pick for a one night stand and the penis they would consider ideal for a long-term partner.
"Women’s preferences for penis size may affect men’s comfort with their own bodies and may have implications for sexual health," the latest study adds.
"Studies of women’s penis size preferences typically have relied on their abstract ratings or selecting amongst 2D, flaccid images.
"This study used haptic stimuli to allow assessment of women’s size recall accuracy for the first time, as well as examine their preferences for erect penis sizes in different relationship contexts."
For casual encounters, women in the study opted for a penis that was 6.4 inches/16.3 cm long with a circumference of 5.0 inches/12.7 cm on average.
In long-term relationships, women picked a penis at a slightly smaller size, with the average preference being a length of 6.3 inches/16.0 cm and circumference of 4.8 inches/12.2 cm.
The women involved in the study were also asked to fill out questionnaires about their penis preference choices, sexual history, and their current sex life.
More women in long-term relationships stated that penis size was not an issue, compared to those who are single.
"Women may prefer a smaller penis size in a long-term partner compared to a one-time partner for reasons of both physical comfort and a preference for less masculinity in a longer term partner," the study concludes.
"The difference in pleasure motive is also suggested by genital physiology. A larger circumference might stretch the vaginal opening such that the deep structures (clitoral crura and vestibular bulbs) are more stimulated, and the clitoral glans is more stimulated by penis movement.
"Also, the vagina is densely packed with pressure-sensitive mechanoreceptors that detect stretch sensations."
This isn't the first study to find that penis size isn't the be all and end all for women.
Researchers at the University of Zurich previously found that penis length was sixth in a woman's priorities of what contributed towards an aesthetically pleasing penis.
The study of 105 women also found that there's "no single penile aspect that is essential".