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On All Orders

Next Working Day OPTION
Order By 2pm Mon > Fri

Found It Cheaper?
We'll beat it!

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womens swimwear uk size 12 34 36 to uk size 14 36 38 Open Back

Browse & Buy Open Back womens swimwear uk size 12 34 36 to uk size 14 36 38 At Simply Swim. Shop With Confidence – Excellent Customer Reviews. Free UK Delivery available on Open Back womens swimwear uk size 12 34 36 to uk size 14 36 38.

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

Speedo - Digital Print Legsuit - Navy/Blue - Model Front

Speedo - Digital Print Legsuit - Navy/Blue - Model Front

Speedo

Digital Print Legsuit - Navy/Blue

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

Speedo

Medley Logo Swimsuit - Black/Peach Orange/Purple

Rated 4.0 out of 5

Based on 1 review

Speedo

Medley Logo Swimsuit - Blue/Green

Speedo - Hyperboom Splice Legsuit - Navy/Blue - Model Front

Speedo - Hyperboom Splice Legsuit - Navy/Blue - Model Front

Speedo

Hyperboom Splice Legsuit - Navy/Blue

Rated 5.0 out of 5

Based on 1 review

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

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

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

Speedo

Medley Logo Swimsuit - Purple/Pink

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

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 1 review

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 - Womens Eaton Flyback Swimsuit - Navy/Blue - Front

Zoggs - Womens Eaton Flyback Swimsuit - Navy/Blue - Front

On Sale

Zoggs

Eaton Flyback Swimsuit - Navy/Blue

Rated 5.0 out of 5

Based on 1 review

Fever Strikeback Swimsuit - Blue

Fever Strikeback Swimsuit - Blue

Zoggs

Fever Strikeback Swimsuit - Blue

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

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

Speedo

Placement Laneback Swimsuit - Black/Green

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

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

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

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

Speedo - Colourblock 2.0 Swimsuit - Navy/Blue - Model Front

Speedo - Colourblock 2.0 Swimsuit - Navy/Blue - Model Front

Speedo

Colourblock 2.0 Swimsuit - Navy/Blue

Rated 4.5 out of 5

Based on 2 reviews

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

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

Zoggs-Simply-Swim-ZO-462417-powerback-tropicana_front

Zoggs-Simply-Swim-ZO-462417-powerback-tropicana_front

Zoggs

Tropicana Powerback Swimsuit - Black/Pink

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

Funkita - Womens Fly Dye Single Strap Swimsuit - Multi - Model Front

Funkita - Womens Fly Dye Single Strap Swimsuit - Multi - Model Front

Funkita

Fly Dye Single Strap Swimsuit - Multi

Rated 5.0 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

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

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

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

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

Zoggs

Boronia Nelson Legsuit - Navy

Speedo - Colourblock 2.0 Swimsuit - Green - Model Front

Speedo - Colourblock 2.0 Swimsuit - Green - Model Front

Speedo

Colourblock 2.0 Swimsuit - Green

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

Funkita - Womens Pixel Paradise Diamond Back Swimsuit - Model Front

Funkita - Womens Pixel Paradise Diamond Back Swimsuit - Model Front

Funkita

Pixel Paradise Diamond Back Swimsuit - Blue/Pink

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

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

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

Speedo

Club Training Printed Powerback Swimsuit - Blue/White

Funkita - Womens Curl Curl Single Strap Swimsuit - Model Front

Funkita - Womens Curl Curl Single Strap Swimsuit - Model Front

Funkita

Curl Curl Single Strap Swimsuit - Multi

Speedo-SP-800481018308-print-racerback_Simply-Swim

Speedo

Printed Racerback Swimsuit - Blue/Teal

Arena - Team Challenge Solid Swimsuit - Water/Pink - Model Front

Arena - Team Challenge Solid Swimsuit - Water/Pink - Model Front

Arena

Team Challenge Solid Swimsuit - Water Blue/Pink

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

Aquafeel Racerback Bikini Set - Royal Blue - Product Front

Aquafeel Racerback Bikini Set - Royal Blue - Product Front

Aquafeel

Racerback Bikini Set - Royal Blue

Rated 4.0 out of 5

Based on 1 review

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

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

Speedo

Club Training Printed Leaderback Swimsuit - Black/Multi

Zoggs - Cuba Sprintback Swimsuit - Black/Blue/Green - Model Front

Zoggs - Cuba Sprintback Swimsuit - Black/Blue/Green - Model Front

On Sale

Zoggs

Cuba Sprintback Swimsuit - Black/Blue/Green

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

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

Speedo

Club Training Printed Powerback Swimsuit - Black/Purple

Aquafeel Classic Open Back Swimsuit - Black - Front

Aquafeel Classic Open Back Swimsuit - Black - Front

On Sale

Aquafeel

Classic Open Back Ladies Swimsuit - Black

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

Arena - Leopard Printed Challenge Back Swimsuit - Fuchsia Multi/Black - Model Front

Arena - Leopard Printed Challenge Back Swimsuit - Fuchsia Multi/Black - Model Front

On Sale

Arena

Leopard Printed Challenge Back Swimsuit - Fuchsia Multi/Black

Rated 5.0 out of 5

Based on 1 review

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

Funkita - Womens Jack Stack Single Strap Swimsuit - Blue - Model Front

Funkita - Womens Jack Stack Single Strap Swimsuit - Blue - Model Front

Funkita

Jack Stack Single Strap Swimsuit - Blue

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

Funkita - Dammed Single Strap Swimsuit - Blue/Yellow - Model Front

Funkita - Dammed Single Strap Swimsuit - Blue/Yellow - Model Front

Funkita

Dammed Single Strap Swimsuit - Blue/Yellow

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

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

TYR

Dragonflyte Durafast Elite Cutoutfit Swimsuit - Navy/Green

Funkita - Womens Miss Adventure Diamond Back Swimsuit - Model Front

Funkita - Womens Miss Adventure Diamond Back Swimsuit - Model Front

Funkita

Miss Adventure Diamond Back Swimsuit - Blue/Red

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

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

Arena

Team Challenge Solid Swimsuit - Black/White

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 - Solid Leaderback Swimsuit - Navy - Model Front

Speedo - Solid Leaderback Swimsuit - Navy - Model Front

Speedo

Solid Leaderback Swimsuit - Navy

TYR - Solid Durafast Elite Cutoutfit Swimsuit - Black - Model Front

TYR - Solid Durafast Elite Cutoutfit Swimsuit - Black - Model Front

Tyr

Solid Durafast Elite Cutoutfit Swimsuit - Black

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-AR-008946-890_monogram-challenge-front-Simply-Swim

Arena-AR-008946-890_monogram-challenge-front-Simply-Swim

Arena

Monogram Challenge Back Swimsuit - Blue/Shocking Pink

Speedo - Placement Muscleback Swimsuit - Blue - Model Front

Speedo - Placement Muscleback Swimsuit - Blue - Model Front

Speedo

Placement Muscleback Swimsuit - Blue

Zoggs-Simply-Swim-ZO-462409-Zephyr-Speedback-front

Zoggs-Simply-Swim-ZO-462409-Zephyr-Speedback-front

Zoggs

Zephyr Speedback Swimsuit - Black/Multi

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

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

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

On Sale

Arena

Crackle Challenge Back Swimsuit - Black/Team Royal

Speedo

Medley Logo Medailst Swimsuit - Black/Yellow

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

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

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

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

Arena

Poseidonia Swim Pro Back Swimsuit - Black/Pink

Funkita - Womens Pride Alive Single Strap Swimsuit - Black/Multi - Model Front

Funkita - Womens Pride Alive Single Strap Swimsuit - Black/Multi - Model Front

Funkita

Pride Alive Single Strap Swimsuit - Black/Multi

Arena - Escape Challenge Back Swimsuit - Black Team - Model Front

Arena - Escape Challenge Back Swimsuit - Black Team - Model Front

Arena

Escape Challenge Back Swimsuit - Black Team

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

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

Speedo

Club Training Printed Powerback Swimsuit - Black/Multi

Aquafeel Racerback Bikini Sets - Black - Front

Aquafeel Racerback Bikini Sets - Black - Front

Aquafeel

Racerback Bikini Set - Black

Kikko Pro Challenge Back Swimsuit - Red/White/Blue

Kikko Pro Challenge Back Swimsuit - Red/White/Blue

On Sale

Arena

Kikko Pro Challenge Back Swimsuit - Red/White/Blue

Funkita - Ocean Sunset Single Strap Swimsuit - Purple/Orange - Model Front

Funkita - Ocean Sunset Single Strap Swimsuit - Purple/Orange - Model Front

On Sale

Funkita

Ocean Sunset Single Strap Swimsuit - Purple/Orange

Funkita-FU-FK-S030L72221-WET-WAVE-Simply-Swim

Funkita-FU-FK-S030L72221-WET-WAVE-Simply-Swim

Funkita

Wet Wave Single Strap Swimsuit - Blue/Multi

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

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

Funkita

Lolly Leopard Single Strap Swimsuit - Black/Multi

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

Funkita-FU-FKS030L71793-big-swell_front-model

Funkita-FU-FKS030L71793-big-swell_front-model

On Sale

Funkita

Big Swell Single Strap Swimsuit - Blue

Rated 5.0 out of 5

Based on 1 review

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

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

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

TYR

Riptidal Durafast Elite Cutoutfit Swimsuit - Pink/Multi

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

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

Funkita

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

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

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