Astral Rosa Women's Flip Flop Water Sandal The Rosa is the ultimate flip-flop that's ideal for light outdoor adventures and everyday. The outsole is made with G.15 super-grippy rubber with siping. The uppers are made of cushioned synthetic leather with embroidered and embossed details. Features a soft, wicking knit liner, reflective accents, and soft nylon webbing toe post. Weighs 184 g and fits true to size.