Reef team rider and world champion Mick Fanning Project Blue series. Reef will donate a part of the proceeds of the sales of this sandal in order to help keep our environment and beaches clean and safe for everyone. Support the BLUE. Reef fit, comfort and quality. Synthetic nubuck upper and underlays. Contoured compression molded EVA footbed with anatomical arch support. Church key to open your soda bottle. Molded eva midsole with built in arch support. Durable rubber outsole.