Japan · Basketry; Palm-fiber hat weaving; Okinawan heritage

Adan-Leaf Hat Weaving (Ryukyu Panama)

アダン葉帽子 (Adan-ba bōshi)

Adan-leaf hats are hats plaited from split, boiled and sun-bleached leaves of adan (Pandanus odoratissimus), the screw pine of Okinawa's shorelines. From the late Meiji period they grew into an export industry. In the 1910s adan hats were counted with brown sugar and awamori as one of Okinawa's three great products. More than ten hat companies operated, and about 30,000 people, mostly women and girls working at home, did the weaving (bōshi kumā). The bleaching and weaving method is credited to 片山徳次郎 (Katayama Tokujirō), a merchant from Kagoshima. The trade collapsed when wild leaf supply ran short, when cheaper paper-yarn ('genrō') hats replaced it, and when the war came. By the 21st century only a handful of elderly weavers, notably on Ie Island, still knew the technique. In 2011 糸数弓子 (Itokazu Yumiko) of Ginowan learned of the hats. Her grandfather's keepsake hat had been woven by her grandmother, and she traveled with a five-month-old baby to Ie Island to learn from 大城ナツ (Ōshiro Natsu). She studied with her for about six months. She now weaves, teaches public courses, and has trained a new generation of makers. Among those she trained, 比嘉聡子 (Higa Satoko), who studied with her from 2016–17, now runs the Takonokimochi workshop and its 'Bōshi Kumā school' at Okinawa Kōgei no Mori in Tomigusuku.

Risk level: Critically Endangered · Not inscribed. No national or prefectural designation identified

Alternate Names
Okinawa Panama hat; Ryukyu Panama; adan-ba bōshi; bōshi kumā (ボーシクマー, hat weaving / hat weavers); pandanus-leaf hat; tako no chiburu (タコのちぶる, 'octopus head' — the Okinawa-style crown start)
Geographic Center
Okinawa Island and Ie Island, Okinawa Prefecture
Community / Ethnic Group
Okinawan (Ryukyuan); historically home-based women weavers
Estimated Origin
Late Meiji period (c. 1900s); export peak in the 1910s; near-extinction after the Second World War; revival from 2011
Cultural Function
Export commodity and household income in prewar Okinawa; today a heritage revival and fashion object
Primary Materials
Adan (Pandanus odoratissimus) leaves
Primary Tools
Sickle (harvesting); cooking pot (boiling); scissors; the hands
Process Overview
Harvest adan leaf -> remove thorns -> split into strips -> boil -> sun-dry/bleach -> plait three-strip bundles in a lattice from the crown outward -> shape crown and brim
Traditional Applications
Export sun hats (the 'Okinawa Panama')
Contemporary Applications
Handmade fashion hats; teaching courses
Notable Practitioners
Itokazu Yumiko (糸数弓子), workshop ori to ami — revival weaver and teacher; Ōshiro Natsu (大城ナツ), Ie Island — elder weaver who taught her (aged 83 in 2016); Higa Satoko (比嘉聡子), Takonokimochi, Okinawa Kōgei no Mori — designer and teacher, trained by Itokazu (2016–17); Mutsumi Jardine, Purple Stitch — teacher in Itokazu's line
Key References
Ryukyu Shimpo, 'アダン葉帽子の技を継ぐ 糸数さん、伊江島に半年通い習得' (9 Oct 2016); adanhat.jp (industry history); QAB, 'Q+リポート 伝統を受け継ぐ アダン葉編みの味わい' (2014); Takonokimochi (adanhat.jp), 'アダン葉帽子とは' (history and process) and 'アダン葉帽子教室' (course syllabus); Purple Stitch (purple-stitch-adan.com), 'About'
Verification Status
Partially verified — revival lineage verified (Ryukyu Shimpo); prewar industry figures from secondary sources

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