From Reef, the Water Willow Maya Slingback Thong Sandals feature: Soft, flexible, and waterproof TPU upper with stylish chevron texture Square toe silhouette Adjustable hook-and-loop slingback closure on outside of foot for adjustability Super squishy and water friendly EVA footbed for underfoot comfort and support Textured EVA outsole for added traction in wet and dry environments Flat heel Imported.