Olukai Women's Nu'a Pi'o Flip Flop - Black Size 8. Contemporary and versatile the Nu'a Pio brings everything you love about sneakers into a classic sandal silhouette. Designed with a thick sole and water-friendly materials, it has all the style you look for in a platform shoe without sacrificing function and comfort. UPPER Lightly textured, water-friendly synthetic straps with a soft, quick-drying jersey knit lining and a nylon toe post create an ultra-comfy fit. FOOTBED Anatomical, lightweight, and plush PU footbed delivers all-day support and cushioning. OUTSOLE Non-marking rubber with a design inspired by island flora for traction.