OluKai Tuahine Flip Flops. The Tuahine elevates your everyday sandal experience. Designed for all-day wear, it offers all-day comfort and features waterproof leather, making it a versatile choice for any day's activities. Tuahine is perfect for strolling through town to relaxing by the beach. Distinctive details, such as custom upper stitching inspired by the cool Hawaiian winds, add a distinct touch of OluKai craftsmanship. Leather Tones May Vary. Made with waterproof full-grain leather, it is ideal for beach activities and water sports. Features a soft stretch mesh lining and a comfortable nylon toe post for superior comfort. Imported.