Best-Selling Flip-Flops from Japan If you're not sure which pair to choose, start here. Made from natural rubber, these flip-flops offer a soft feel that gently grips your feet. Comfortable enough for all-day wear without fatigue. Once lost after the Great Hanshin-Awaji Earthquake, natural rubber flip-flops are now made again in Japan — revived by TSUKUMO after nearly 30 years. Made in Japan — all processes are completed domestically. 【Material】 Sole: Natural rubber Thong: Natural rubber 【Size Guide】 23 cm = US Women’s 6 / EU 36 24 cm = US Women’s 7 / EU 37 25 cm = US Women’s 8 / US Men’s 7 / EU 39–40 26 cm = US Men’s 8 / EU 41 27 cm = US Men’s 9 / EU 42 28 cm = US Men’s 10 / EU 43