OluKai Womens Kulapa Kai . UPPER Water-resistant synthetic leather strap with soft, quick-drying jersey knit lining and neoprene backer. FOOTBED Anatomical compression-molded EVA midsole with an EVA drop-in footbed for comfort and support. OUTSOLE Non-marking rubber outsole withocean-inspired traction pods with molded siped ridges. FEATURES Soft nylon toe post webbing with laser-etched footbed design.