Cariuma OCA Polka Dots Canvas Sneaker Unisex Size 8.5 Women| 7 Men True to size. Size up 1/2 size for extra comfort Certified organic cotton canvas, memory foam insole, fully stitched outsole, Raw natural rubber Sole. The sneaker that plants trees. We're making sneakers in a way that's better for you, and the planet. Pair by pair. we're doing our part to restore our rainforests through our ecological restoration program.