OluKai Ohana Mens Flip Flops with Arch Support OluKai Ohana ohhahna Translation Family. This is a really comfortable Flip Flop sandal with added arch support great for Men who want to avoid arch or heel pain. Upper is constructed of Waterresistant synthetic leather straps with soft quickdrying jersey knit lining and neoprene backer. Footbed is constructed of an Anatomical compressionmolded EVA midsole with EVA dropin footbed for personalized fit. Outsole is constructed of Nonmarking gum rubber outsole with coral reef lug design for added grip.