O'Neill Men's Shoes Superfreak Flip-Flop 100% Polyurethane Nubuck/Ethylene Vinyl Acetate Imported Synthetic sole Ultra light weight comfort PU nubuck / EVA, comfortable, water-friendly PU nubuck upper O'Neill Superfreak Sandal Footwear for Men brushed footbed with anatomical arch support injection molded ultra-light midsole with wave logo detail, injection molded coastline outsole