Core Bikinis is Melissa Odabash's repeat-purchase two-piece collection, in black, white, navy and red premium Italian swim fabric, built as the silhouettes a customer buys once and reaches for every trip after. Core Bikinis carries the same fit authority that built the wider Core Collection, narrowed here to two pieces in black, white, navy and red. These are the silhouettes a woman buys once and reaches for on every trip that follows, rather than replacing them each new season the way trend-led swimwear demands. Four colors mean four fewer decisions each time a new season's swimwear is chosen. The underwired Brussels Black Bikini Top and clasp-back Bel Air Black Bikini Top lead in full coverage, while the triangle-cut Miami Black Bikini Top and Cancun Black Bikini Top offer a lighter hold for warmer afternoons, and the halter Grenada Black Bikini Top and Barcelona Black Bikini Top sit between the two for a softer, more rounded shape. Cut from premium Italian swim fabric with SPF 50+ protection, every style resists chlorine and sun oils and holds its shape through repeated wear, so the fit and color chosen this year are still exactly right next year. Mix tops and bottoms freely across the four core shades, then layer a kaftan or shirt from Core Beachwear for the walk back from the water to lunch, or an evening drink after. Some choices, in swimwear as elsewhere, are worth making only once. The color rarely changes here; only the print worn alongside it does.