The Square Mary Jane in Black Soft, flexible upper in black. - run half size small in black. Features a slim, flexible strap in black that keeps your feet secure. Comfortable matching insoles and durable tortoise shell outsoles. All of our styles are machine washable—so they last for the long haul. Slip out insoles. Toss insoles and shoes in the wash with cold water. Air dry. No heat, please. Wear again and again. *these have not been washed* Knit from Rothy’s signature thread, which is spun from plastic bottles. Learn more. It took about 9 plastic bottles to knit this pair of shoes. In 2023, Rothy’s factory achieved TRUE Platinum certification, validating that it’s operating with Zero Waste Practices by diverting solid waste from landfill, incineration and the environment.