Design: Water-resistant synthetic overlay on upper Comfortable strap features multi-texture design In-Shoe Comfort: Supportive carrier midsole for long lasting comfort and support Soft drop-in footbed underfoot Durability & Traction: Non-marking Wet Grip Rubber outsole delivers unmatched traction for sure-footed exploration Brushed footbed for additional traction underfoot Brushed EVA midsole maximizes surface to rubber contact OluKai Men's Kukulu Sandals