x REVOLVE Tobin One Piece

This one-piece relies on a sharp, plunging V-neckline anchored by a central gold-tone ring that exposes the midriff. The high-cut leg and ruched back construction are designed to elongate the frame, favoring a dramatic, high-octane silhouette characteristic of Costello’s red-carpet leanings. It is an unapologetically structural approach to swimwear, prioritizing form and physical impact over traditional coverage.

Safety Rating: Lowest

Analysis: Composed of 80% nylon and 20% spandex, this garment is entirely petroleum-derived. These synthetic fibers offer low breathability and pose concerns regarding microplastic shedding and potential chemical transfer to the skin in high-heat environments.