Reef Flex Flip-Flop Sandals You can only find this sandal at West Marine! Design collaboration between West Marine and Reefhas produced the ultimate waterlife sandal. Excellent for water-lovers, the Flex is quick drying and non-marking, and its rugged rubber outsole gives you excellent traction. This sandal is ideal for you either on a boat or on the beach. Synthetic uppers/rubber outsoles. Imported.