These are Birkenstock EVA slide sandals, specifically the Arizona Essentials EVA style. This is the waterproof, single-strap, lightweight version of Birkenstock's classic two-strap sandal. They are made of EVA foam; a soft, lightweight, waterproof material, good for the pool, beach, and shower. They have a bright neon yellow color. These are an easy-care rubber version of regular Birkenstocks — super common for summer, travel, and around-the-house wear. In fair to good pre-owned condition. Please see all pictures as they are part of the description.