OCA is a future-classic, crafted from premium quality materials like GOTS-certified organic cotton canvas, natural rubber, recycled plastics. Designed for lasting comfort, OCA features our signature cork + mamona oil insoles and durable details, including a fully-stitched outsole and debossed metal aglets. [ split ] Upper: Cotton canvas Lining: Cotton canvas Sole: 100% slip-resistant rubber Insole: Mamona oil bio based cork insert with CARIUMA logo Laces: Made with recycled plastics + organic cotton, with debossed metal aglets Construction: Handmade vulcanized sneaker; fully stitched outsole