Royal Robbins Essential Rio Dress Product Description The Essential Rio Dress from Royal Robins is comfortable and stylish. Crafted using cotton, polyester, and spandex, it is soft and easy to wear. It features an attractive print with a paneled skirt. The wrinkle-resistant dress has a cross over neckline and a flattering empire waist. With the UPF 50+ protection and moisture-wicking feature, it is ideal for all weather wear.