Top 9 12-13 Year Old Costume UK – Girls’ One-Piece Swimsuits

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1. Speedo

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Black and Pink, 13-14 Years, Extra Coverage and Movement, Comfortable Fit, Speedo Girl's Hyperboom Splice Legsuit

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Speedo #ad - Trees for clean seas: we care about the world's wild water, so we're planting two million Mangrove trees by the end of 2022. Our mission is to inspire people to swim whether it's for training, fitness or fun & make every moment in the water better.

Power fabric: this suit is not only quick-drying because of Endurance + fabric but has a higher chlorine resistance than standard swimwear fabrics & fits like new for longer thanks to CREORA HighClo technology. Flexibility & freedom: featuring an eye-catching print and muscleback design, the juniors’ Boomstar Splice Legsuit swimming costume enables your child to achieve a full range of movement and added comfort for long or short swims. Mangroves create essential habitats for sea life & are great at absorbing CO2 making the air cleaner for us & our oceans.

Feel good, swim good: the muscleback design is great for longer swim sessions, the legsuit provides additional coverage while shape retention fabric holds shape and is stretchy to keep active kids of any age comfortable. Making waves: since our founding in australia in 1928, racing, we have been passionate about life in & around the water.
BrandSpeedo #ad
ManufacturerSpeedo #ad
Part Number812392G720
Model8-12392

2. Speedo

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Stylish Design, Comfortable, Speedo Girl's ECO Endurance+ Medallist Swimsuit, Black, 11-12 Years, Extra Flexibility

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Speedo #ad - Quality & comfort: our classic junior medallist suit, now with better eco-credentials; We'Ve Given This Popular Swimming Costume An Update Using Super-Durable New Eco Endurance+ Fabric While Still Including the Comfort & Freedom That Is Expected.

Trees for clean seas: we care about the world's wild water, so we're planting two million mangrove Trees By the End of 2022; Mangroves Create Essential Habitats For Sea Life & Are Great At Absorbing Co2 Making the Air Cleaner For Us & Our oceans. Making waves: since our founding in australia in 1928, we have been passionate about life in & Around the Water. Our mission is to inspire people to swim whether It'S For Training, Racing, Fitness or Fun & Make Every Moment in the Water Better.

Feel good, swim good: retaining the same cut and fit young swimmers love and offering Great Shoulder Movement And Flexibility, This Kids Suit Is Now Made From 50% Recycled Materials And Includes A Strap Seam To Reduce Fabric Waste. Eco power fabric: our 100% chlorine-resistant endurance+ fabric is quick-drying and made For Long-Lasting Wear And Being 50% Recycled, One of the Yarns Is Even Made From 100% Post-Consumer Waste, Such As Recycled Plastic Bottles.
BrandSpeedo #ad
ManufacturerSpeedo #ad
Weight0 kg (0 Pounds)
Part Number8134570001
Model8-13457
Warranty3807 year

3. Speedo

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13-14 Years, Speedo Girl's Hyperboom Splice Muscleback Swimsuit, True Navy/Miami Lilac/ Taffy Pink

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Speedo #ad - Higher chlorine resistance than standard swimwear fabrics - fits like new for longer with CREORA HighClo. Shape retention - fabric stretches so you can enjoy your swim without feeling restricted. Muscleback swimsuit - great for longer swim sessions with the design allowing full range of motion.
BrandSpeedo #ad
ManufacturerSpeedo #ad
Part Number81345606878
Model8-13456

4. Speedo

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13-14 Years, Speedo Girl's Plastisol Placement Muscleback Black/Pink Swimsuit Swimming Costume

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Speedo #ad - Muscleback - great for longer swim sessions with the design allowing full range of motion Higher chlorine resistance than standard swimwear fabrics - fits like new for longer with CREORA HighClo Shape Retention - fabric stretches so you can enjoy your swim without feeling restricted.
BrandSpeedo #ad
ManufacturerSpeedo #ad

5. Speedo

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Black/Electric Pink, 13-14 Years, Speedo Girl's Girls Boom Logo Splice Muscleback Swimsuit

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Speedo #ad - Great for longer swim sessions, the muscleback style enables your child to achieve a full range of motion during their swim. Higher chlorine resistance than standard swimwear fabrics - fits like new for longer with CREORA HighClo.

This sleek black muscleback suit features an eye-catching pink splice of our iconic print down its side. Iconic speedo style. Quick-drying and stretchy to keep active kids comfortable, it’s made from Endurance1 fabric which is designed to keep its shape. Shape retention - fabric stretches so you can enjoy your swim without feeling restricted. Muscleback - great for longer swim sessions with the design allowing full range of motion.
BrandSpeedo #ad
ManufacturerSpeedo #ad
Part Number812859B344
Model8-12859

6. Speedo

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13-14 Years UK, Speedo Girl's Boom Splice Muscle Back Swimsuit, Black/Electric Pink

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Speedo #ad - Muscleback - ideal for longer swim sessions with a design that allows full range of motion. Shape retention - stretch fabric eliminates restriction while swimming. Four-way stretch technology for high comfort and softness in girls’ swimwear. Practical quick Dry fabric saves time after a swim. Higher chlorine resistance than standard swimwear fabrics - fits like new for longer with CREORA HighClo.
BrandSpeedo #ad
ManufacturerSpeedo #ad
Height7 cm (2.76 Inches)
Length23 cm (9.06 Inches)
Weight0.1 kg (0.22 Pounds)
Width14 cm (5.51 Inches)
Part Number8-10844B344
Model8-10844B344

7. Zoggs

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Zoggs Girl's Cottesloe Sportsback One Piece Swimsuit, 12 Years, Black/Eco Fabric

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Zoggs #ad - 100% chlorine proof swimsuit with lifetime guarantee, machine washable, UPF 50+ sun protection. This swimming costume is part of the Zoggs sustainable product program, using recycled materials to help protect our environment for future generations. Ideal for swimming lessons, competitve swimming and school swimming. Ecolast+ fabric is made using fibre produced from recycled plastic bottles and consumer waste. Open back allows for added comfort and flexibility.
BrandZoggs #ad
ManufacturerZoggs #ad
Height34.4 cm (13.54 Inches)
Length2.8 cm (1.1 Inches)
Width18.1 cm (7.13 Inches)
Part Number555019032
Model555019032

8. Speedo

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Comfortable Fit, Extra Flexibility, Black, Speedo Boy's ECO Endurance+ Aquashort, 11-12 Years, Adjustable Design

#ad
Speedo #ad - Making waves: since our founding in australia in 1928, we have been passionate about life in & around the water. Our mission is to inspire people to swim whether it's for training, racing, fitness or fun & make every moment in the water better.

Quality & comfort: our popular junior aquashort, now with better eco-credentials. Mangroves create essential habitats for sea life & are great at absorbing CO2 making the air cleaner for us & our oceans. Feel good, swim good: retaining the sleek shape and internal drawcord waist that make it so comfy during lessons and training, this suit is now made from 50% recycled materials ideal for short or long pool sessions. Eco power fabric: our 100% chlorine-resistant endurance+ fabric is quick-drying and made for long-lasting wear and being 50% recycled, one of the yarns is even made from 100% post-consumer waste, such as recycled plastic bottles.

We've given this classic swimming costume an update using super-durable ECO Endurance+ fabric while still including the comfort & freedom of motion that is expected. Trees for clean seas: we care about the world's wild water, so we're planting two million Mangrove trees by the end of 2022.
BrandSpeedo #ad
ManufacturerSpeedo #ad
Part Number8134610001
Model8-13461

9. Harry Bear

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Harry Bear Girls Leopard Print Swimming Costume with Zip One Piece Animal Swimsuit for Girls Multicoloured 12-13 Years

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Harry Bear #ad - Your fierce femme will make a splash in this ferocious leopard print swimsuit! Crafted for quality and style by Harry Bear. Super comfy stretchy leopard print motif swimsuit. Harry bear loves making a big splash for fun in the sun! Premium quality kids patterned swim wear.
BrandHarry Bear #ad