Founded in 2009 by Carl Cunow and Nathan Romano; Onia's range — from basics to beachwear — is designed for ease with clean-cut silhouettes and high-quality fabrics to create a reliable wardrobe for every day. Made of smoothing tricot fabric; the Arya one-piece is a classic tank suit that turns to reveal a circular cutout in the back as well as an adjustable hook closure. Its scooped neckline; straps and high-cut leg are all traced in contrast binding.

Onia Arya One Piece Swimsuit

Founded in 2009 by Carl Cunow and Nathan Romano; Onia's range — from basics to beachwear — is designed for ease with clean-cut silhouettes and high-quality fabrics to create a reliable wardrobe for every day. Designed to flatter curves; the Chiara Bikini Bottom is a seamless; mid-rise style with a dipped front and a rounded minimal-coverage back. It has wide sides for a comfortable fit at the hips and a high cut intended to make legs appear longer.

Onia Chiara Bikini Bottom

Founded in 2009 by Carl Cunow and Nathan Romano; Onia's range — from basics to beachwear — is designed for ease with clean-cut silhouettes and high-quality fabrics to create a reliable wardrobe for every day. Made from stretch tricot fabric; our Soleil bikini top has fixed triangle cups; adjustable straps and extralong string ties; creating a wraparound silhouette. It’s perfect in a set paired with the matching high-cut brief.

Onia Soleil Bikini Top

Founded in 2009 by Carl Cunow and Nathan Romano; Onia's range — from basics to beachwear — is designed for ease with clean-cut silhouettes and high-quality fabrics to create a reliable wardrobe for every day. Designed in a feminine; strap-optional; one-piece that sculpts your frame; the Belle suit has underwired foam cups for gentle lift and support. A scooped back with an adjustable band helps keep the top securely in place when you wear it as a bandeau silhouette.

Onia Belle One Piece Swimsuit

Founded in 2009 by Carl Cunow and Nathan Romano; Onia's range — from basics to beachwear — is designed for ease with clean-cut silhouettes and high-quality fabrics to create a reliable wardrobe for every day. Made from stretch tricot fabric; the Cleo brief is a string-tie swim bottom; traced in contrast binding and cut for cheeky back coverage.

Onia Cleo Bikini Bottom

Founded in 2009 by Carl Cunow and Nathan Romano; Onia's range — from basics to beachwear — is designed for ease with clean-cut silhouettes and high-quality fabrics to create a reliable wardrobe for every day. A reimagining of a classic bandeau; our Palermo top is centered by square hardware that anchors a removable tie-neck strap. Contrast binding outlines the silhouette while an S-hook closure finishes the back.

Onia Palermo Bikini Top

Founded in 2009 by Carl Cunow and Nathan Romano; Onia's range — from basics to beachwear — is designed for ease with clean-cut silhouettes and high-quality fabrics to create a reliable wardrobe for every day. A tie-front keyhole cutout and contrast binding give the Soliel one-piece its distinctive look. The suit is made from stretch tricot fabric with fixed triangle cups; adjustable straps and a high cut at the leg.

Onia Soleil One Piece Swimsuit

Bikini briefs floral-print stretch-nylon low-rise slips on matching bikini top also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Floral-print low-rise bikini briefs

Bikini top stretch-nylon gathered slips on matching bikini brief also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Lauren one-shoulder gathered bikini top

Swimsuit stretch-jacquard adjustable straps fully lined snap fastenings along front hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Lola stretch-jacquard swimsuit

Swimsuit stretch-jacquard adjustable straps fully lined snap fastenings along front pulls on hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Bikini top underwired cups stretch-nylon ribbed adjustable straps fully lined hook fastening at back matching bikini brief also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Dalia ribbed underwired bikini top

Swimsuit stretch-nylon ribbed ring embellishment adjustable straps cutout fully lined pulls on hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Marisole cutout ribbed swimsuit

Bandeau bikini top padded cups floral-print stretch-nylon buckle-embellished cutout fully lined matching bikini brief also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Cutout floral-print bandeau bikini top

Triangle bikini top soft cups stretch-nylon adjustable straps fully lined slips on matching bikini brief also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Mallory triangle bikini top

Bikini briefs liberty-print stretch-nylon low-rise fully lined matching bikini top also available hand wash sunscreen and chlorine can discolor swimwear. please follow care instructions imported

Onia Chiara Liberty-print low-rise bikini briefs

Swimsuit stretch-piquè textured fully lined hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Rachel stretch-piquè swimsuit

Swimsuit floral-print stretch-nylon internal boning pulls on hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Wren one-shoulder floral-print swimsuit

Bikini briefs stretch-nylon mid-rise fully lined matching bikini top also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Karina mid-rise bikini briefs

Triangle bikini top stretch-nylon adjustable straps wrap-effect front hook fastening at back matching bikini brief also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Malin triangle bikini top

Bikini briefs printed stretch-nylon mid-rise fully lined matching bikini top also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Lily printed mid-rise bikini briefs

Bikini briefs stretch-piquè mid-rise fully lined matching bikini top also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Lily stretch-piquè mid-rise bikini briefs

Bikini briefs floral-print stretch-nylon mid-rise fully lined matching bikini top also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Chiara floral-print mid-rise bikini briefs

Bikini top stretch-piquè adjustable straps fully lined snap fastenings through front matching bikini brief also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Veronica stretch-piquè bikini top

Swimsuit stretch-nylon fully lined pulls on hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Iris swimsuit

Bikini briefs stretch-nylon ribbed adjustable straps low-rise fully lined matching bikini top also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Hannah ribbed low-rise bikini briefs

Triangle bikini top paisley-print stretch-nylon adjustable straps ties at back matching bikini brief also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Alexa paisley-print triangle bikini top

Bikini briefs printed stretch-nylon low-rise fully lined matching bikini top also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Chiara printed low-rise bikini briefs

Triangle bikini removable padded cups stretch-nylon adjustable straps removable padded cups fully lined hook fastening at back hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Sani triangle bikini top

Onia Daisy printed low-rise bikini briefs

Bikini top underwired cups stretch-nylon bow-embellished adjustable straps ruched hook fastening at back hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Marilyn ruched underwired bikini top

Triangle bikini top stretch-nylon adjustable straps fully lined ties at back matching bikini brief also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Alexa triangle bikini top

Swimsuit stretch-nylon adjustable straps fully lined pulls on hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Juliette swimsuit

Triangle bikini top stretch-nylon adjustable straps fully lined hook fastening at back matching bikini brief also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Bandeau bikini top stretch-jacquard ring embellishment fully lined clasp fastening at back matching bikini brief also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Luna stretch-jacquard bandeau bikini top

Bikini briefs liberty-print stretch-nylon low-rise fully lined matching bikini top also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Ashley Liberty-print low-rise bikini briefs

Bikini briefs liberty-print stretch-nylon low-rise fully lined ties at sides matching bikini top also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Kate Liberty-print low-rise bikini briefs

One-shoulder top printed cotton-poplin elasticated neckline cropped elasticated cuffs elasticated hemline slips on non-stretchy fabric mid-weight fabric machine wash imported

Onia One-shoulder cropped printed cotton-poplin top

Onia Lily mid-rise bikini briefs

Swimsuit printed stretch-nylon ring embellishment cutout adjustable straps lined at base pulls on hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Marisol cutout ring-embellished printed swimsuit

Bikini briefs stretch-nylon mid-rise matching bikini top also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Triangle bikini top stretch-nylon adjustable straps wrap-effect front hook fastening at back matching bikini brief also available hand wash imported

Bikini top underwired cups stretch-nylon adjustable straps fully lined hook fastening at back matching bikini brief also available imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Anna underwired bikini top

Bikini briefs stretch-nylon low-rise fully lined matching bikini top also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Chiara low-rise bikini briefs

Bikini top printed stretch-nylon adjustable straps wrap-effect hook fastenings through back matching bikini brief also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Malin wrap-effect printed bikini top

Onia Lily stretch-piqué low-rise bikini briefs

Bikini briefs gingham seersucker mid-rise hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Daisy gingham seersucker mid-rise bikini briefs

Bikini briefs striped stretch-nylon low-rise fully lined matching bikini top also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Daisy striped low-rise bikini briefs

Bikini briefs stretch-jacquard low-rise fully lined matching bikini top also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Ashley stretch-jacquard low-rise bikini briefs

Bikini top underwired cups stretch nylon-blend ribbed adjustable straps hook fastening at back hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Liana underwired bikini top

Bikini top underwired padded cups stretch-nylon adjustable straps clasp fastening at back matching bikini brief also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Dalia underwired bikini top

Bandeau bikini top printed stretch-nylon ring embellishment fully lined hook fastening at back hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Printed bandeau bikini top

Swimsuit stretch-nylon ribbed adjustable straps fully lined pulls on hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Wren one-shoulder ribbed swimsuit

Swimsuit stretch-nylon ribbed adjustable straps fully lined hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Bikini briefs stretch-nylon mid-rise fully lined pulls on mid-weight fabric hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

Onia Ashley low-rise bikini briefs

Bikini briefs stretch-nylon ribbed trims low-rise matching bikini top also available hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions

OniaJuliette swimsuit

Product Info

Onia Juliette swimsuit