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Next Working Day OPTION
Order By 2pm Mon > Fri

Found It Cheaper?
We'll beat it!

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womens swimwear uk size 16 38 40 to uk size 18 40 42 Open Back

Browse & Buy Open Back womens swimwear uk size 16 38 40 to uk size 18 40 42 At Simply Swim. Shop With Confidence – Excellent Customer Reviews. Free UK Delivery available on Open Back womens swimwear uk size 16 38 40 to uk size 18 40 42.

Filter for your size and we'll only show you what's in-stock.

Arena - Team Challenge Solid Swimsuit - Red/White - Model Front Pose

Arena - Team Challenge Solid Swimsuit - Red/White - Model Front Pose

Arena

Team Challenge Solid Swimsuit - Red/White

Rated 5.0 out of 5

Based on 1 review

Zoggs-Simply-Swim-ZO-462316-octane-hi-front

Zoggs-Simply-Swim-ZO-462316-octane-hi-front

Zoggs

Octane Hi Front Swimsuit - Blue/Multi

Rated 5.0 out of 5

Based on 1 review

Arena - Team Challenge Solid Swimsuit - Royal/White - Model Pose

Arena - Team Challenge Solid Swimsuit - Royal/White - Model Pose

Arena

Team Challenge Solid Swimsuit - Royal/White

Rated 5.0 out of 5

Based on 2 reviews

Fever Strikeback Swimsuit - Blue

Fever Strikeback Swimsuit - Blue

Zoggs

Fever Strikeback Swimsuit - Blue

Speedo - Colourblock 2.0 Swimsuit - Black/Pink - Model Front

Speedo - Colourblock 2.0 Swimsuit - Black/Pink - Model Front

Speedo

Colourblock 2.0 Swimsuit - Black/Pink

Rated 4.0 out of 5

Based on 1 review

Funkita-FU-FK-S033L722222-WARPED-WAVES-DIAMOND_Simply-Swim

Funkita-FU-FK-S033L722222-WARPED-WAVES-DIAMOND_Simply-Swim

Funkita

Warped Waves Diamond Back Swimsuit - Blue/Pink

Arena - Team Challenge Solid Swimsuit - Navy/White - Front Full Body

Arena - Team Challenge Solid Swimsuit - Navy/White - Front Full Body

Arena

Team Challenge Solid Swimsuit - Navy/White

Rated 4.0 out of 5

Based on 1 review

Zoggs-Simply-Swim-ZO-462365-strikeback-octane_3-front

Zoggs-Simply-Swim-ZO-462365-strikeback-octane_3-front

Zoggs

Octane Strikeback Swimsuit - Black/Multi

Zoggs-Simply-Swim-ZO-462383-hi-front-boronia_front

Zoggs-Simply-Swim-ZO-462383-hi-front-boronia_front

Zoggs

Boronia Hi Front Swimsuit - Navy

Rated 5.0 out of 5

Based on 2 reviews

Speedo - Club Training Printed Powerback Swimsuit - Black/Multi - Model Front

Speedo - Club Training Printed Powerback Swimsuit - Black/Multi - Model Front

On Sale

Speedo

Club Training Printed Powerback Swimsuit - Black/Multi

Arena - Team Swim Pro Solid Swimsuit - Navy/White - Model Full Body Shot

Arena - Team Swim Pro Solid Swimsuit - Navy/White - Model Full Body Shot

Arena

Team Swim Pro Solid Swimsuit - Navy/White

TYR - Triadic Durafast Elite Diamondfit Swimsuit - Blue - Model Front

TYR - Triadic Durafast Elite Diamondfit Swimsuit - Blue - Model Front

TYR

Triadic Durafast Elite Diamondfit Swimsuit - Blue

Hyperboom Medalist Allover Print Swimsuit - Blue

Hyperboom Medalist Allover Print Swimsuit - Blue

Speedo

Hyperboom Medalist Allover Print Swimsuit - Blue

Funkita-FU-FKS033L72254-YOU-MESSER_Simply-Swim

Funkita-FU-FKS033L72254-YOU-MESSER_Simply-Swim

Funkita

You Messer Diamond Back Swimsuit - Blue/Black

Funkita - Womens Miss Adventure Diamond Back Swimsuit - Model Front

Funkita - Womens Miss Adventure Diamond Back Swimsuit - Model Front

On Sale

Funkita

Miss Adventure Diamond Back Swimsuit - Blue/Red

Speedo - Placement Laneback Swimsuit - Black/Green - Model Front

Speedo - Placement Laneback Swimsuit - Black/Green - Model Front

Speedo

Placement Laneback Swimsuit - Black/Green

Arena - Team Swim Pro Solid Swimsuit - Black/White - Model Front

Arena - Team Swim Pro Solid Swimsuit - Black/White - Model Front

Arena

Team Swim Pro Solid Swimsuit - Black/White

Rated 5.0 out of 5

Based on 1 review

Funkita-FU-FKS033L72236-MAD-CAT-DIAMOND-Simply-Swim

Funkita-FU-FKS033L72236-MAD-CAT-DIAMOND-Simply-Swim

Funkita

Mad Cat Diamond Back Swimsuit - Multi

Speedo - Placement Muscleback Swimsuit - Blue - Model Front

Speedo - Placement Muscleback Swimsuit - Blue - Model Front

Speedo

Placement Muscleback Swimsuit - Blue

Rated 4.0 out of 5

Based on 1 review

Zoggs-Simply-Swim-ZO-462420-Nelson-Legsuit_FRONT

Zoggs-Simply-Swim-ZO-462420-Nelson-Legsuit_FRONT

Zoggs

Boronia Nelson Legsuit - Navy

Rated 5.0 out of 5

Based on 1 review

Speedo - Placement Muscleback Swimsuit - Black/Pink/Orange - Product Front

Speedo - Placement Muscleback Swimsuit - Black/Pink/Orange - Product Front

Speedo

Placement Muscleback Swimsuit - Black/Pink/Orange

Rated 5.0 out of 5

Based on 1 review

Speedo - Club Training Placement Printed Leaderback Swimsuit - Blac/Pink - Model Front

Speedo - Club Training Placement Printed Leaderback Swimsuit - Blac/Pink - Model Front

On Sale

Speedo

Club Training Placement Printed Leaderback Swimsuit - Black/Pink

Speedo - Club Training Printed Powerback Swimsuit - Blue/White - Model Front

Speedo - Club Training Printed Powerback Swimsuit - Blue/White - Model Front

On Sale

Speedo

Club Training Printed Powerback Swimsuit - Blue/White

Speedo - Endurance+ Printed Medalist Swimsuit - Green/White - Model Front

Speedo - Endurance+ Printed Medalist Swimsuit - Green/White - Model Front

Speedo

Endurance+ Printed Medalist Swimsuit - Green/White

Speedo - Club Training Printed Powerback Swimsuit - Black/Purple
- Model Front

Speedo - Club Training Printed Powerback Swimsuit - Black/Purple
- Model Front

On Sale

Speedo

Club Training Printed Powerback Swimsuit - Black/Purple

Speedo - Endurance+ Printed Medalist Swimsuit - Black/White - Model Front

Speedo - Endurance+ Printed Medalist Swimsuit - Black/White - Model Front

Speedo

Endurance+ Printed Medalist Swimsuit - Black/White

Rated 5.0 out of 5

Based on 1 review

TYR- Riptidal Durafast Elite Cutout Swimsuit - Teal/Orange - Model Front

TYR- Riptidal Durafast Elite Cutout Swimsuit - Teal/Orange - Model Front

On Sale

TYR

Riptidal Durafast Elite Cutout Swimsuit - Teal/Orange

Speedo - Womens ECO Endurance Plus Thinstrap Swimsuit - Model Front - Navy

Speedo - Womens ECO Endurance Plus Thinstrap Swimsuit - Model Front - Navy

Speedo

ECO Endurance Plus Thinstrap Swimsuit - Navy

Rated 3.0 out of 5

Based on 1 review

Arena - Snakeskin Challenge Back Swimsuit - Black/Pink Multi - Model Front

Arena - Snakeskin Challenge Back Swimsuit - Black/Pink Multi - Model Front

Arena

Snakeskin Challenge Back Swimsuit - Black/Pink Multi

Funkita-FU-FK-S030L72252-MESSY_Simply-Swim

Funkita-FU-FK-S030L72252-MESSY_Simply-Swim

On Sale

Funkita

Messy Messy Messy Single Strap Swimsuit - Blue

TYR - Montipora Durafast Elite Cutoutfit Swimsuit - Purple/Orange - Model Front

TYR - Montipora Durafast Elite Cutoutfit Swimsuit - Purple/Orange - Model Front

TYR

Montipora Durafast Elite Cutoutfit Swimsuit - Purple/Orange

Speedo - Allover Digital Recordbreaker Swimsuit - Blue/Black - Product Front/Side

Speedo - Allover Digital Recordbreaker Swimsuit - Blue/Black - Product Front/Side

On Sale

Speedo

Allover Digital Recordbreaker Swimsuit - Blue/Black

Speedo - Hyperboom Allover Medalist Swimsuit - Black/Purple/Orange - Model Front

Speedo - Hyperboom Allover Medalist Swimsuit - Black/Purple/Orange - Model Front

Speedo

Hyperboom Allover Medalist Swimsuit - Black/Purple/Orange

Funkita-FU-FKS079L72228-PINKY-PALMS-SECURE_Simply-Swim

Funkita-FU-FKS079L72228-PINKY-PALMS-SECURE_Simply-Swim

Funkita

Pinky Palms Diamond Secure Back (Period Proof) Swimsuit - Pink/Navy

Arena - Team Challenge Solid Swimsuit - Neon Blue/Team Orange - Model Front

Arena - Team Challenge Solid Swimsuit - Neon Blue/Team Orange - Model Front

Arena

Team Challenge Solid Swimsuit - Neon Blue/Team Orange

Funkita-FU-FKS033L72250-UNDER-OVER-Simply-Swim

Funkita-FU-FKS033L72250-UNDER-OVER-Simply-Swim

On Sale

Funkita

Under Over Diamond Back Swimsuit - Blue

Funkita - Womens Pixel Paradise Diamond Back Swimsuit - Model Front

Funkita - Womens Pixel Paradise Diamond Back Swimsuit - Model Front

On Sale

Funkita

Pixel Paradise Diamond Back Swimsuit - Blue/Pink

Aquafeel Classic Open Back Swimsuit - Royal Blue - Front

Aquafeel Classic Open Back Swimsuit - Royal Blue - Front

On Sale

Aquafeel

Classic Open Back Ladies Swimsuit - Royal Blue

Speedo-SP-800481018308-print-racerback_Simply-Swim

Speedo

Printed Racerback Swimsuit - Blue/Teal

Arena - Team Swim Pro Solid Swimsuit - Model Front Pose - Royal/White

Arena - Team Swim Pro Solid Swimsuit - Model Front Pose - Royal/White

Arena

Team Swim Pro Solid Swimsuit - Royal/White

Rated 3.7 out of 5

Based on 3 reviews

Speedo - Colourblock 2.0 Swimsuit - Black/Turquoise - Model Front

Speedo - Colourblock 2.0 Swimsuit - Black/Turquoise - Model Front

Speedo

Colourblock 2.0 Swimsuit - Black/Turquoise

Funkita - Tickle Torture Diamond Secure Back (Period Proof) Swimsuit - Multi - Model Front

Funkita - Tickle Torture Diamond Secure Back (Period Proof) Swimsuit - Multi - Model Front

On Sale

Funkita

Tickle Torture Diamond Secure Back (Period Proof) Swimsuit - Multi

Funkita - Womens Copper Cluster Diamond Secure Back (Period Proof) Swimsuit - Black/Multi - Model Front

Funkita - Womens Copper Cluster Diamond Secure Back (Period Proof) Swimsuit - Black/Multi - Model Front

Funkita

Copper Cluster Diamond Secure Back (Period Proof) Swimsuit - Black/Multi

Speedo Womens ECO Endurance Plus Thinstrap Swimsuit - Front - Black

Speedo Womens ECO Endurance Plus Thinstrap Swimsuit - Front - Black

Speedo

ECO Endurance Plus Thinstrap Swimsuit - Black

Rated 4.0 out of 5

Based on 1 review

Speedo

Medley Logo Medailst Swimsuit - Black/Yellow

Speedo - Solid Leaderback Swimsuit - Black - Model Front

Speedo - Solid Leaderback Swimsuit - Black - Model Front

On Sale

Speedo

Solid Leaderback Swimsuit - Black

Aquafeel Classic Open Back Swimsuit - Black - Front

Aquafeel Classic Open Back Swimsuit - Black - Front

On Sale

Aquafeel

Classic Open Back Ladies Swimsuit - Black

Zoggs - Crazy Wash Atomback Swimsuit - Black/Multi - Model Front

Zoggs - Crazy Wash Atomback Swimsuit - Black/Multi - Model Front

On Sale

Zoggs

Crazy Wash Atomback Swimsuit - Black/Multi

SP-81347016764-AF-hyperboom-splice-muscleback-black_blue_front

SP-81347016764-AF-hyperboom-splice-muscleback-black_blue_front

Speedo

Hyperboom Splice Muscleback Swimsuit - Black/Blue

Rated 5.0 out of 5

Based on 1 review

Speedo - Solid Leaderback Swimsuit - Navy - Model Front

Speedo - Solid Leaderback Swimsuit - Navy - Model Front

Speedo

Solid Leaderback Swimsuit - Navy

Funkita - Womens Snap That Single Strap Swimsuit - Mint Green/Pink - Model Front

Funkita - Womens Snap That Single Strap Swimsuit - Mint Green/Pink - Model Front

Funkita

Snap That Single Strap Swimsuit - Mint Green/Pink

Rated 5.0 out of 5

Based on 1 review

Funkita-FU-FK-S030L72235-LOLLY-LEOPARD_Simply-Swim

Funkita-FU-FK-S030L72235-LOLLY-LEOPARD_Simply-Swim

On Sale

Funkita

Lolly Leopard Single Strap Swimsuit - Black/Multi

Funkita - Wave Craze Diamond Back Swimsuit - Blue/Red - Model Front

Funkita - Wave Craze Diamond Back Swimsuit - Blue/Red - Model Front

Funkita

Wave Craze Diamond Back Swimsuit - Blue/Red

FK-FTS030-women-single-strap-motherboard_front

FK-FTS030-women-single-strap-motherboard_front

On Sale

Funkita

Motherboard Single Strap Swimsuit - Blue/Multi

Rated 5.0 out of 5

Based on 1 review

Funkita - Pace Racer Diamond Back Swimsuit - Blue - Model Front

Funkita - Pace Racer Diamond Back Swimsuit - Blue - Model Front

Funkita

Pace Racer Diamond Back Swimsuit - Blue

Funkita - Cloudy Colours Single Strap Swimsuit - Blue/Pink - Model Front

Funkita - Cloudy Colours Single Strap Swimsuit - Blue/Pink - Model Front

Funkita

Cloudy Colours Single Strap Swimsuit - Blue/Pink

Arena - Poseidonia Swim Pro Back Swimsuit - Black/Pink - Model Front

Arena - Poseidonia Swim Pro Back Swimsuit - Black/Pink - Model Front

On Sale

Arena

Poseidonia Swim Pro Back Swimsuit - Black/Pink

Zoggs - Daintree Hi Front Swimsuit - Black/Blue - Model Front

Zoggs - Daintree Hi Front Swimsuit - Black/Blue - Model Front

Zoggs

Daintree Hi Front Swimsuit - Black/Blue

Rated 5.0 out of 5

Based on 3 reviews

Arena - Team Challenge Solid Swimsuit - Dark Sage/Shocking Pink - Model Front

Arena - Team Challenge Solid Swimsuit - Dark Sage/Shocking Pink - Model Front

Arena

Team Challenge Solid Swimsuit - Dark Sage/Shocking Pink

Speedo - Hyperboom Placement Muscleback Swimsuit - Black/Coral Pink - Product Front/Side

Speedo - Hyperboom Placement Muscleback Swimsuit - Black/Coral Pink - Product Front/Side

Speedo

Hyperboom Placement Muscleback Swimsuit - Black/Coral Pink

Rated 5.0 out of 5

Based on 1 review

Funkita - Womens Copper Cluster Diamond Back Swimsuit - Model Front

Funkita - Womens Copper Cluster Diamond Back Swimsuit - Model Front

Funkita

Copper Cluster Diamond Back Swimsuit - Black/Multi

Rated 5.0 out of 5

Based on 1 review

Arena - Team Swim Pro Solid Swimsuit - Red/White - Model Front

Arena - Team Swim Pro Solid Swimsuit - Red/White - Model Front

Arena

Team Swim Pro Solid Swimsuit - Red/White

Zoggs-ZO-462313-Paradox-Sprintback-Simply-Swim

Zoggs-ZO-462313-Paradox-Sprintback-Simply-Swim

On Sale

Zoggs

Paradox Sprintback Swimsuit - Pink

TYR - Riptidal Durafast Elite Cutoutfit Swimsuit - Pink/Multi - Model Front

TYR - Riptidal Durafast Elite Cutoutfit Swimsuit - Pink/Multi - Model Front

On Sale

TYR

Riptidal Durafast Elite Cutoutfit Swimsuit - Pink/Multi

Funkita - Still Black Diamond Secure Back (Period Proof) Swimsuit - Black - Model Front

Funkita - Still Black Diamond Secure Back (Period Proof) Swimsuit - Black - Model Front

Funkita

Still Black Diamond Secure Back (Period Proof) Swimsuit - Black

SP-8-00381617591-allover-digital-recordbreaker-black_pink_blue_back

SP-8-00381617591-allover-digital-recordbreaker-black_pink_blue_back

On Sale

Speedo

Allover Digital Recordbreaker Swimsuit - Black/Pink/Blue

Funkita - Womens Tropic Wash Single Strap Swimsuit - Blue/Pink - Model Front

Funkita - Womens Tropic Wash Single Strap Swimsuit - Blue/Pink - Model Front

Funkita

Tropic Wash Single Strap Swimsuit - Blue/Pink

Funkita - The Glitch Swim Secure (Period Proof) Swimsuit - Multi - Model Front

Funkita - The Glitch Swim Secure (Period Proof) Swimsuit - Multi - Model Front

Funkita

The Glitch Swim Secure (Period Proof) Swimsuit - Multi

SW-ZO-462377-SISP-Strikeback-Ecofeel-front

SW-ZO-462377-SISP-Strikeback-Ecofeel-front

On Sale

Zoggs

Sirene Sparkle Thermal Ecofeel Strikeback Swimsuit - Aqua/Pink

Crazy Wash Cannon Strikeback Swimsuit - Black/Pink/Blue

Crazy Wash Cannon Strikeback Swimsuit - Black/Pink/Blue

On Sale

Zoggs

Crazy Wash Cannon Strikeback Swimsuit - Black/Pink/Blue

TYR - Dragonflyte Durafast Elite Cutoutfit Swimsuit - Navy/Green - Model Front

TYR - Dragonflyte Durafast Elite Cutoutfit Swimsuit - Navy/Green - Model Front

On Sale

TYR

Dragonflyte Durafast Elite Cutoutfit Swimsuit - Navy/Green

Arena - Snakeskin Challenge Back Swimsuit - Black/Team Royal - Model Front

Arena - Snakeskin Challenge Back Swimsuit - Black/Team Royal - Model Front

Arena

Snakeskin Challenge Back Swimsuit - Black/Team Royal

Funkita-FU-FKS073L72236-MAD-CAT-Simply-Swim

Funkita-FU-FKS073L72236-MAD-CAT-Simply-Swim

Funkita

Mad Cat Swim Secure (Period Proof) Swimsuit - Blues/Black

Zoggs - Classique Hi Front Swimsuit - Black/White - Model Front

Zoggs - Classique Hi Front Swimsuit - Black/White - Model Front

On Sale

Zoggs

Classique Hi Front Swimsuit - Black/White

Rated 5.0 out of 5

Based on 2 reviews

Speedo-AF-800381616691-allover-digital-recordbreaker-blue_red_front

Speedo-AF-800381616691-allover-digital-recordbreaker-blue_red_front

On Sale

Speedo

Allover Digital Recordbreaker Swimsuit - Blue/Red

Zoggs-womens-462562-Eaton-Flyback_front-model

Zoggs-womens-462562-Eaton-Flyback_front-model

On Sale

Zoggs

Eaton Flyback Swimsuit - Black/Magenta

Rated 4.0 out of 5

Based on 1 review

AR-007090-550-Women-printed-legsuit-front

AR-007090-550-Women-printed-legsuit-front

Arena

Printed Full Body Kneesuit - Team Black

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