Miniskirts on Mount Fuji as Japan’s ‘Yama Girls’ Spur Trekki

Miniskirts on Mount Fuji as Japan’s ‘Yama Girls’ Spur Trekki

Robert Gilhooly/Bloomberg

A customer tries on trekking wear popular with Japanese women in their 20s and 30s, Goldwin Inc.'s North Face Harajuku store in Tokyo. North Face, maker of the Gore-Tex waterproof jacket, and Alpine Tour Service Co. are targeting "yama girls," or mountain girls, the nickname of the growing number of women who are taking to the hills of Japan wearing short pants or fleece skirts with leggings and designer trekking boots.