An Ultra Soft Upper & Sole Our unique 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. So Comfy, You'll Forget You're Wearing Them 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. COMPLETELY MACHINE WASHABLE! One pair of VIVAIA flats uses 6 recycled plastic bottles from city waste and the ocean. Our factories source these usable plastics, weave them into beautiful threads and knit them into super soft uppers. BUNDLE & SAVE! BOGO 1/2 off + FREE shipping!