One pair of VIVAIA flats uses 6 recycled plastic bottles from city waste and the ocean. 3D Knitting technology creates uppers that are both flexible and soft. The outsoles of each shoe are crafted using carbon-free rubber that is shock-absorbent, anti-slip, and adds a delightful bounce to your step. The insoles are soft and cushiony for a cloud-like feel that provides support with each and every step. Forget heavy and bulky shoes! These flats are lighter and softer than ordinary shoes, with a unique plastic-made material that has excellent breathability. Your feet will stay dry, clean, and comfortable all day long. Keeping your shoes clean doesn't involve science anymore. Save some time to really enjoy life by throwing these shoes in the washer! Simply follow the washing guide and your VIVAIA shoes will be squeaky clean and ready to wear again and again.