Onia Soleil One Piece Black/Egret

Product Insights & Style Tips

The Onia Soleil One Piece in Black/Egret has that sleek, graphic energy made for poolside plans and sandy escapes alike. Its high-contrast black base edged with crisp egret trim and ties gives classic swimwear a cool, sharply edited twist. The fabric is smoothly supportive with just enough stretch, so it hugs in softly without feeling restrictive—think modern Bond girl with a knowing wink. The subtle keyhole at the neckline, cinched with a bow, nods to vintage glamour without feeling precious.

This one piece considers all the essentials: adjustable straps customize the fit up top, and a self-tie at the neck lets you play with coverage and styling. Lined for comfort and modesty, the moderate cut offers confidence whether you’re lounging or testing the water. Neat contrast edges flatter the silhouette and layer seamlessly under denim shorts or a breezy shirt for a midday break from the sun. It carries that rare balance of secure and sensual, staying put through tan lines and saltwater dips.

Onia has a reputation for understated swimwear done right—the Soleil lands squarely in that lane, delivering minimalist appeal with just enough visual punch thanks to its contrast trim. Style it with oversized sunglasses and a basket bag to channel a Côte d’Azur afternoon, or make it city-sharp under an open button-down when the day calls for a quick switch from pool to party.