OLUKAI Lele - Women's Flip Flops Synthetic The upper is made from water-resistant synthetic leather strap with soft- quick-drying jersey knit lining and neoprene backer. Anatomical compression-molded EVA midsole with a non-slip brushed EVA drop-in footbed for comfort and support. Non-marking rubber or gum rubber outsole with ocean-inspired traction pods with molded siping ridges. Soft nylon toe post webbing- embroidered hook and welded stripe detail- and laser-etched artwork.