Reef Stuyak II Sandals Brown, , Upper: Soft suede and canvas, Outsole: Rubber, Reef-flex dual density EVA construction, Anatomical arch support, Contoured compression molded EVA footbed with printed graphics, Ultra grippy molded Reef rubber outsole, These Reef sandals feature a reef-flex dual density EVA construction, anatomical arch support and ultra grippy molded Reef rubber outsole. ,