Analysis of information sources in references of the Wikipedia article "Zori" in English language version.
[from volume 2, page 8] The simplest form of outdoor footwear is the waraji, a sandal of coarse rice-straw, some what shorter than the foot, to which it is firmly tied by means of two straw laces (often covered with white paper). These laces issue from between the first and second toes and pass in turn through a couple of loops at each side, up over the foot, through the loop which forms a heel-piece, and back again to be tied over the instep. The waraji are used by men for energetic and long-continued work, travelling, etc. Their length of life is only about twenty-four hours, but they are very cheap (about a farthing a pair) and supplies of them are carried by travellers and thrown away when worn out...For ordinary use, such as leisurely walking on hard, dry ground, the zōri is employed. This is a sandal of fine rice-straw matting and normally has no separate sole. But varieties of it, made of woven rushes of various kinds or of bamboo-sheath, are commonly soled with coiled hemp-rope (asaura-zōri), with wistaria-stems, (fujiura-zōri), or with wood in lateral sections (zōri-geta or itatsuke-zōri). A superior variety, known as setta, has a raw-hide sole with iron heel-piece [sic].The zōri is kept on by means of two thick soft cords (hanao) of twisted cotton or paper, covered with leather or cloth, issuing from each side near the heel and uniting with a short, thinner piece which passes between, and is gripped by, the first and second toes. Rush zōri with very thick tapering cords of straw-rope covered with white paper or cotton are known as fuku-zōri. In modern times the hanao do not come so far back as in former days; the sandal itself is also a little shorter, instead of being slightly longer, than the foot(translator did not translate the full book text, but from the acknowledgements of vol 1 it sounds as if some of his translations might be incorporated into the work. Volume 1 came out in 1919, volume 2 in 1920. Note the work is in the public domain, therefore the fulltext is not copyright)
{{cite web}}: CS1 maint: multiple names: authors list (link) CS1 maint: numeric names: authors list (link) (sense two, a footwear top surface of igusa (soft rush), rattan, or bamboo sheath)