Zettai ryōiki refers to the area of bare skin in the gap between overknee socks and a skirt or shorts. It can also be used to describe the clothing combination. The term first became widespread in ota
Thigh
…of 'awrah for both men and women. Strategic covering or display of thighs is used in popular fashion around the world, such as thigh-high boots and zettai ryoiki…
An example of zettai ryōiki on a model at the 2012 Bologna Motor Show