A gallery of females modelling スパッツ / spats, that is to say leggings and similar skintight garments concealing, or attempting to conceal, the lower half of the body. Maximum ero-points are attained by wearing them under a skirt, it would appear.
Since this is a more particular gallery, there is a selection of photographic images in addition to the illustrated mainstay. As ever, see the illustrations on the Channel in more comfort.
Now for those spats photographs: