OLUKAI Holomua Synthetic-and-mesh Rubber sole Upper: Soft neoprene base with adjustable webbing overlay and water-resistant rubber strap anchors Footbed: Innovative lightweight injected TPU performance chassis and a soft molded anatomical ICEVA footbed with wet traction surface design Outsole: Non-marking sticky rubber outsole pods co-molded with a lightweight compression molded EVA midsole Molded siping for wet surface traction Fully adjustable straps with micro hook-and-loop closure