Reef Fanning model sandals Men Size 9 Reef Fanning model sandals Men Size 9 Reef flip-flops, Reef Fanning model. These sandals are known for being the signature footwear of world-champion surfer Mick Fanning and are famous for having a bottle opener built into the outsole. Cleanline Surf Key Features of Reef Fanning Sandals Built-in Bottle Opener: A "church key" is integrated into the footbed/outsole for opening bottles. Athletic Support: They feature a 360-degree heel airbag for impact protection and a compression-molded EVA footbed with anatomical arch support. Comfort Materials: The straps are typically made from water-friendly synthetic nubuck with a soft, padded jersey lining to prevent chafing.