Rubber sole VIVAIA Melia Collection: From office to street, these flats match most of your daily looks on any occasion. They are designed with ultra soft microfiber soles and low, 12mm heels that are perfect for all-day wear. The minimal pointed-toe style is timeless and versatile, enhancing femininity with everything from professional attire to casual dress. Knit upper made from plastic bottles: We chip plastic bottles and extrude them into thread, so we can put them into 3D seamless knitting machines and cause no extra waste. With breathable and soft insole, these shoes are cushiony, supportive, breathable, and moisture-wicking that can avoid smelly feet even in the heat and humidity. Packaged with recycled cardboard, all of our packaging boxes are created using recycled cardboard. Less harm to our environment. These shoes are Not Machine Washable