REEF Men。Reef Men’s Fanning Bottle Opener Flip Flop in Black is a best‑selling athletic thong sandal with a cushioned airbag heel and a built‑in bottle opener in the sole. Key features Signature Mick Fanning sandal: Designed with input from three‑time world champion surfer Mick Fanning as a performance-inspired beach sandal. Bottle opener: “Church key” metal bottle opener built into the outsole/footbed so you can open beverages anywhere. Cushioning & support: Compression-molded EVA footbed with anatomical arch support and a 360‑degree heel airbag for shock absorption. Materials  Upper: Water‑friendly synthetic nubuck strap with a soft padded jersey or perforated liner for comfort against the skin. Midsole/footbed: High‑rebound, compression‑molded EVA with contoured arch support and visible heel airbag unit. Outsole: Durable herringbone‑pattern rubber outsole for traction, with the integrated bottle opener.