Best Speedo One-Piece Swimsuits for Girls of 2025

John Zimmer Avatar
John Zimmer
Last Updated: 30 Jan 2025

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One-Piece Swimsuits by Speedo are a stylish and practical choice for girls looking to make a statement at the beach or pool. These swimsuits feature a sleek design and are made from high-quality materials that provide both comfort and durability. With a range of vibrant colours and fun patterns to choose from, girls can express their individual style while enjoying a day in the water. The Speedo brand is well-known for its expertise in swimwear, making these one-piece swimsuits a reliable choice for any young swimmer.

At a Glance: Our Top Picks

Speedo Junior Girl's HyperBoom Muscleback Swimsuit Cover #TOP 1
Speedo Junior Girl's HyperBoom Muscleback Swimsuit
ftb score rating icon 9.9
Speedo Junior Girl's Hyperboom Medalist Swimsuit Cover #TOP 2
Speedo Junior Girl's Hyperboom Medalist Swimsuit
ftb score rating icon 9.8
Speedo Girls Hyperboom One Piece Swimsuit Cover #TOP 3
Speedo Girls Hyperboom One Piece Swimsuit
ftb score rating icon 9.6

Top 10 Speedo One-Piece Swimsuits for Girls

#TOP 1

Speedo Junior Girl's HyperBoom Muscleback Swimsuit

8-00372
7-8 Years
Speedo Junior Girl's HyperBoom Muscleback Swimsuit Cover
Speedo Junior Girl's HyperBoom Splice Muscleback Swimsuit | Swim Training |Chlorine Resistant | Quick Drying | Stretch Fabric | Comfort Fit | 1 Piece, Black/Country Green/Nectarine, 7-8 Years

The Speedo HyperBoom Swimsuit is designed for young swimmers who need comfort and flexibility during longer swim sessions. Its muscleback design allows for a full range of motion, ensuring you can swim freely. The fabric offers higher chlorine resistance than standard swimwear, so it will maintain its shape and fit like new for longer. Additionally, the stretch fabric aids in shape retention, providing a comfortable experience without feeling restricted. Enjoy your time in the water with this high-performance swimsuit.

What We Like
Comfortable muscleback design
High chlorine resistance
Shape retention for freedom
Quick drying fabric
#TOP 2

Speedo Junior Girl's Hyperboom Medalist Swimsuit

8-12858
15-16 Years
Speedo Junior Girl's Hyperboom Medalist Swimsuit Cover
Speedo Junior Girl's Hyperboom Logo Medalist Swimsuit, Black/ Electric Pink/ Ecstatic, 15-16 Years

The Speedo Hyperboom Swimsuit is designed with a Medalist cut, allowing for excellent shoulder movement and flexibility, perfect for your training sessions. Its higher chlorine resistance ensures that the fabric maintains its shape and fit, even after multiple uses. You will appreciate the shape retention feature, which allows the swimsuit to stretch without feeling restrictive, giving you freedom of movement in the water. Additionally, the front lining provides extra comfort and modesty, especially with the bright colours of the swimsuit.

What We Like
Flexible shoulder movement
Chlorine resistant fabric
Shape retention for comfort
Front lined for modesty
#TOP 3

Speedo Girls Hyperboom One Piece Swimsuit

8-00372
15-16 Years
Speedo Girls Hyperboom One Piece Swimsuit Cover
Speedo Girls Hyperboom Allover Medalist One Piece | Chlorine Resistant Quick Drying Swimsuit, True Navy/Electric Pink/Fandango Pink, 15-16 Years EU

The Speedo Hyperboom Swimsuit is designed for young swimmers who need flexibility and comfort during their training. The medalist design promotes better shoulder movement, allowing you to swim freely. With its higher chlorine resistance, this swimsuit maintains its fit and appearance longer than standard swimwear. The shape retention feature ensures that the fabric stretches with you, so you won’t feel restricted while swimming. Additionally, the front lining provides extra comfort and modesty, especially with bright colours.

What We Like
Enhanced shoulder movement
Long-lasting chlorine resistance
Comfortable shape retention
Eco-friendly fabric
Front lined for modesty
#TOP 4

Speedo Kids Chima Azure Blue Swimsuit

8-12252
4-6 Years
Speedo Kids Chima Azure Blue Swimsuit Cover
Speedo Unisex Kids Character Printed FV Swimsuit, Chima Azure Blue/Fluro Green, 4-6 Years

The Speedo Chima Swimsuit is designed for children aged 4-6 years and features a vibrant design of Chima the African Penguin. This one-piece swimsuit includes foam inserts for buoyancy, helping your child feel more secure in the water. It is essential to supervise children when they use this product, ensuring their safety during swim time. Additionally, it meets Australian and European safety standards, giving you peace of mind while your little ones enjoy their aquatic adventures.

What We Like
Bright and colourful design
Foam inserts for buoyancy
Suitable for children aged 4-6
Meets safety standards
#TOP 5

Speedo Kids Digital Print One Piece Swimsuit

Blue/Yellow
11-12 Years
Speedo Kids Digital Print One Piece Swimsuit Cover
Speedo Kids Dgi Plmt Psbk One Piece Swimsuit Blue/Yellow 11-12 Years

The Speedo Kids Swimsuit offers a vibrant digital print that enhances colour and definition, making it a stylish choice for young swimmers. Its 100% chlorine resistance ensures long-lasting performance, allowing you to enjoy countless swims without worrying about wear and tear. You'll appreciate how quickly it dries after your swim, making it convenient for changing back into everyday clothes. Additionally, one of the yarns is made from 100% post-consumer waste, such as recycled plastic bottles, helping you contribute to environmental sustainability.

What We Like
Chlorine resistant for durability
Quick drying for convenience
Eco-friendly materials used
Vibrant digital print design
Front lined for comfort
#TOP 6

Speedo Girls Digital Allover Leaderback Costume

81237716778
13-14 Years
Speedo Girls Digital Allover Leaderback Costume Cover
Speedo Girls Digital Allover Leaderback Swimming Costume Black Watermelon True Cobalt Flare Pink Bitter Lime Bolt

The Speedo Leaderback Costume is an excellent choice for young swimmers. As a one-piece swimsuit, it provides full coverage, allowing you to swim confidently without worrying about adjustments. Made from synthetic material, it offers durability and a comfortable fit, making it ideal for regular use. The vibrant colour options, including black and watermelon, add a fun touch that young girls will enjoy. This swimsuit not only looks great but also allows for ease of movement, enhancing your swimming experience.

What We Like
Durable synthetic material
Full coverage design
Comfortable fit
Vibrant colour options
#TOP 7

Speedo Junior Girl's Splashback Swimsuit

8-00262716
15-16 Years
Speedo Junior Girl's Splashback Swimsuit Cover
Speedo Junior Girl's Digital Placement Splashback Swimsuit | Chlorine Resistant | Printed Design | Swimming Lessons, Black/Lemon Drizzle/Flare Pink/True Cobalt/Harlequin Green, 15-16 Years

The Speedo Splashback Swimsuit offers excellent freedom of movement in the water, thanks to its unique splashback design that keeps straps away from your shoulders. It features enhanced chlorine resistance, meaning it will maintain its fit and appearance for longer periods, making it perfect for regular swimming lessons. You’ll also appreciate the shape retention, as the fabric stretches comfortably without feeling restrictive. Additionally, the front lining adds comfort and modesty, allowing you to swim confidently in bright colours.

What We Like
Excellent freedom of movement
High chlorine resistance
Comfortable shape retention
Front lined for modesty
#TOP 8

Speedo Infant Girl's Blue Swimsuit

8-07970
Blue
4 Years
Speedo Infant Girl's Blue Swimsuit Cover
Speedo Infant Girl's Digital Printed Swimsuit, Blue, 4 Years

The Speedo Girl's Swimsuit is designed for comfort and freedom of movement, thanks to its racerback style that keeps the straps securely in place. Its higher chlorine resistance ensures the fabric maintains its quality and fit for longer, allowing you to enjoy more swims without worrying about wear and tear. The shape retention feature means you can swim freely without feeling restricted, and the front lining adds an extra layer of comfort and modesty, especially when wearing bright colours. This swimsuit is perfect for your little one’s aquatic adventures.

What We Like
Comfortable racerback design
Chlorine-resistant fabric
Shape retention for freedom
Front lining for modesty
#TOP 9

Speedo Infant Girl's Crossback Swimsuit

8-00314216
5 Years
Speedo Infant Girl's Crossback Swimsuit Cover
Speedo Infant Girl's Learn to Swim Printed Crossback Swimsuit | Chlorine Resistant | Recycled Fabric | Stretchy Fabric, Cherry Pink/Cupid Coral/Sweet Taro, 5 Years

The Speedo Crossback Swimsuit is designed for comfort and performance. Its crossback design ensures the straps stay in place, allowing you freedom of movement while swimming. With higher chlorine resistance than standard fabrics, this swimsuit maintains its fit longer, so you can enjoy more swims without worry. The stretchy EnduraFlex fabric, made from recycled nylon yarns, gives you excellent shape retention, enabling a comfortable and unrestricted experience in the water. Lastly, the front lining provides added comfort and modesty, particularly with its bright colours.

What We Like
Comfortable crossback design
Chlorine-resistant fabric
Stretchy and shape-retaining
Eco-friendly recycled materials
Front lining for modesty
#TOP 10

Speedo Kids Black/Bondi Splashback Swimsuit

8/07386H220-F13
Black/Bondi
13-14 Years
Speedo Kids Black/Bondi Splashback Swimsuit Cover
Speedo Kids AO Splashback Kids Black/Bondi 13 (XL)

The Speedo Kids Splashback Swimsuit is a great choice for young swimmers. This one-piece design provides excellent coverage, allowing you to feel confident and comfortable in the water. Its black and Bondi colour combination is stylish and appealing to kids. The swimsuit is specifically made for girls, ensuring a perfect fit for their body shape. With its durable material, it is designed to withstand regular use, making it ideal for pool days or swim lessons.

What We Like
Stylish design
Comfortable fit
Durable material
Great for swimming lessons
Buying Guide Image
Editor's Notes

During our Speedo one-piece swimsuit for girls research, we found 191 Speedo one-piece swimsuit for girls products and shortlisted 10 quality products. We collected and analyzed 8,688 customer reviews through our big data system to write the Speedo one-piece swimsuits for girls list. We found that most customers choose Speedo one-piece swimsuits for girls with an average price of £17.85.

The Speedo one-piece swimsuits for girls are available for purchase. The top 10 picks range in price from a low of £6.00 to a high of £24.00, find the one that fits your budget.

Written by
John Zimmer Avatar

John Zimmer is a truly professional writer on findthisbest.com. He has specialized in writing content a wide variety of fields for over a decade. Since 2011, he has been using his expertise and extensive experience to write content for online shopping guide websites. In addition to writing for findthisbest.com, he has appeared in publications such as The Spruce, Wirecutter and Bestbuy.