The Ss Olivia 13 AC String Thong is a type of lingerie designed to provide ultimate comfort and support. The "Ss" likely stands for the brand or collection name, while "Olivia" might be a specific style or design. The "13 AC" could refer to the material, size, or other product specifications. Lastly, "String Thong" describes the style of the lingerie, which is a type of underwear that features a thin string or cord for support.