Ideal penis size for women

The researchers, American and Mexican, have asked 75 women to observe and manipulate penis models made with a 3D printer and printed in blue to avoid any ethnic reference. Models were between 10 and 20 cm long, and between 5 and 17 cm in circumference.
He was then asked participants to choose from among the 33 models presented, that they would prefer for a one-night stand, and one she would choose for a long term relationship.
For an adventure without tomorrow: women have opted for a male average of 16.3 cm to 12.7 cm erect girth.
For an ongoing relationship: the average holding size is 16 cm long and 12.2 cm in circumference.