The side knot high waist brief mingles great with all bikini tops. Lightweight drape overlay. High waist. Full seat coverage with modern leg line. Power Mesh lined front Tricot, 85% Nylon, 15% Spandex,Sizes 8-26 Hand wash with mild soap. Roll suit in towel and squeeze out excess water. Dry flat avoid washers and dryers.Imported Close Back Details “UPF” stands for Ultraviolet Protection Factor and it measures the Ultraviolet radiation or “UV” protection from the sun provided by a fabric. (Similar to the Spf rating system used for sunscreens.) Our Swimsuits For All styles with UV sun protection have a rating of UPF 50 (the highest possible rating) which means only 1/50th of the sun s UV rays can pass through, and it blocks 98% of UV rays