Kyowa O'Band Rubber Bands, popular since 1923, are made from natural vulcanized rubber, known for their durability and elasticity. They stand out not only for their strength but also for their colorful assortment and attractive packaging, making them a top choice in Japan for office and classroom use. Sold in tins that hold approximately 200 rubber bands each and weigh 30 grams, these rubber bands offer both functionality and style, ideal for various bundling and organising tasks.