Rothy's Women's Blue The Original Slip On Soft Sneaker Size 8.5. Serving up unbeatable comfort and effortless street style, our slip-on sneaker in navy is a washable staple made for every adventure. Even better? It's knit from plastic bottles. Soft, flexible upper in navy—which means no break-in period, ever. Comfortable insoles in medium tan and durable outsoles in cream. Features a white and medium tan heel stripe for a sporty touch. Fully machine washable, so they’re like new again and again. Our shoes don’t stretch much—so make sure they are not too snug. Slip out insoles. Use cold water, mild detergent and the delicate cycle. No heat, please—always let your shoes air dry.shoes, sneakers, slip on, original, soft, blue, women, washable, knit, comfy, comfort, casual, travel, winter, summer, spring, fall, solid. Rothy's Box 3.