Effortlessly chic and ready for sun, this strappy halter bikini top is a must-have for every beach babe! With self-tie halter straps and built-in wire-free bra cups, this bikini top is expertly designed to fit and flatter. Wear with any of our swim bottoms to create the mix-and-match bikini of your dreams. Built-in, soft wire-free bra cupsSelf-tie halter straps at neck and backLoop strap detail with adjustable back strapsSolutions: UPF 50 Sun ProtectionNylon/spandexFabric provides UPF 50 UV protection. See details. 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. Sunscreen use is still recommended when wearing our UPF 50 styles since no clothing can completely block out UV rays. Please note that most fabrics lose some of their UV protection over time from repeated washing and wearing. Garments that are damp or wet typically provide less UV protection (this is especially true of lighter fabric colors). Also, on any UPF 50 suit that had mesh or other fabric panels, those panels would not provide the same UPF 50 protection.