Best Competitive Swimwear Girls One-Piece Suits of 2026

Name: Arena Solid Challenge Team Girls' Swimsuit
Brand: ARENA

Keira Murphy

Last Updated: 10 Feb 2026

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

For young competitive swimmers, having the right swimsuit can make all the difference. Girls one-piece suits are a popular choice for their streamlined design and comfortable fit. These swimsuits are made with high-quality materials that offer excellent durability and resistance to chlorine. They come in a variety of colours and styles to suit different preferences and body types. Designed to reduce drag and maximise speed, these competitive swimwear suits are a great choice for any young swimmer looking to perform their best in the pool.

At a Glance: Our Top Picks

#TOP 1

Arena Solid Challenge Team Girls' Swimsuit

9.8

Buy on Amazon Read Review

#TOP 2

Arena Girls Powerskin St Next Ob Jr Swimsuit

9.7

Buy on Amazon Read Review

#TOP 3

ARENA Solid Swim Pro Team Girls' One-Piece Swimsuit

9.5

Buy on Amazon Read Review

Top 4 Competitive Swimwear Girls One-Piece Suits

#TOP 1

Arena Solid Challenge Team Girls' Swimsuit

ARENA
004765
Black-white

ARENA Solid Challenge Team Junior Girl's One-Piece Swimsuit, Fast-Drying Sports Swimwear, MaxLife Fabric with Maximum Chlorine Resistance and UPF 50+ UV Protection Black-White

The Arena Solid Challenge Swimsuit is designed for young swimmers who require a reliable and comfortable option for training. Made with MaxLife fabric, it dries quickly and resists chlorine, ensuring longevity even with regular use. With UPF 50+ UV protection, you can feel secure knowing your skin is shielded while swimming outdoors. The one-piece design features an open back and thin straps, providing freedom of movement and reducing friction, allowing you to swim with ease and confidence.

9.8

Buy on Amazon Find on eBay

What We Like

Quick-drying fabric
Chlorine resistant
Comfortable fit
Eco-friendly materials
Good UV protection

#TOP 2

Arena Girls Powerskin St Next Ob Jr Swimsuit

ARENA
005877
Aquamarine

ARENA Girls Powerskin St Next Ob Jr One Piece Swimsuit, Aquamarine, 28 EU

The Arena Powerskin One Piece is an innovative racing suit designed specifically for girls. Made from over 60% recycled fabrics, it not only supports sustainability but also offers a lighter feel, reducing water absorption and drag. This means you can swim faster and with greater ease. Its ergonomic design, along with low profile seams, provides an excellent fit and freedom of movement, allowing you to perform at your best. Additionally, reinforced shoulder straps ensure comfort and durability, making it perfect for competitive swimmers.

9.7

Buy on Amazon Find on eBay

What We Like

Eco-friendly recycled materials
Lighter for improved speed
Excellent fit and comfort
Enhanced support and compression

#TOP 3

ARENA Solid Swim Pro Team Girls' One-Piece Swimsuit

ARENA
004762
Navy-white

ARENA Solid Swim Pro Team Girls' One-Piece Swimsuit, Quick-Drying, Sports Swimsuit in MaxLife ECO-Fabric with Chlorine Resistance and UPF 50+ UV Protection Navy-White

The ARENA Swim Pro Back is a sporty one-piece swimsuit designed for girls who swim regularly, whether competitively or for leisure. Its chlorine-resistant fabric means it lasts longer, even with frequent pool use, while the quick-drying material helps keep you comfortable between swims. Made from eco-friendly recycled polyester, this suit is both durable and kind to the environment. Additionally, the ergonomic back cut and wide shoulder straps provide excellent comfort and support, allowing you to focus on your swim without distractions.

9.5

Buy on Amazon Find on eBay

What We Like

Chlorine-resistant fabric
Quick-drying material
Eco-friendly recycled polyester
Comfortable ergonomic design

#TOP 4

Arena Girl's Powerskin ST Next Blue Racing Suit

ARENA
005877
Blue

Arena Girl's Racing Suit Powerskin ST Next Blue

The Arena Powerskin ST Next is the first racing suit for girls made with recycled fabrics, offering you a lighter, more durable, and faster swim experience. With over 60% of the fabric made from recycled yarns, it supports sustainability while ensuring you benefit from a suit that absorbs less water and reduces drag. The new fabric also provides longer-lasting compression for greater durability. Its ergonomic design, including low-profile seams and reinforced shoulder straps, gives you a perfect fit, excellent freedom of movement, and added comfort during your swim.

9.4

Buy on Amazon Find on eBay

What We Like

Made with recycled fabrics
Lightweight and durable
Reduces water absorption and drag
Ergonomic design for comfort
Reinforced shoulder straps

Frequently Asked Questions (FAQs)

1. What are competitive swim suits called?

The style of men's competition swimsuits is called a jammer. With the extreme focus placed on compression technology, you can easily see why. As suit rules have ebbed and flowed over the years, current international specifications dictate a suit for men that can run only from the belly button to the top of the knees.

2. What is a women's one-piece bathing suit called?

The maillot (UK: /mʌɪˈəʊ/; US: /maɪˈoʊ, maɪˈjoʊ/) is the fashion designer's name for a woman's one-piece swimsuit, also called a tank suit. A maillot swimsuit generally consists of a tank-style torso top with high-cut legs.

3. What was the one-piece swimming suit once called?

Kellerman marketed a line of bathing suits and her style of one-piece suits came to be known as "the Annette Kellerman". The one-piece swimming tights became accepted swimsuit attire for women in parts of Europe by 1910. Harper's Bazaar praised the Kellerman swimsuit, writing in June 1920 (vol.

4. Are one piece swimsuits flattering?

Not only are one-piece swimsuits extremely flattering on practically every body type, but they also look super glamorous in poolside selfies.

Editor's Notes

During our competitive swimwear girls one-piece suit research, we found 306 competitive swimwear girls one-piece suit products and shortlisted 4 quality products. We collected and analyzed 5,954 customer reviews through our big data system to write the competitive swimwear girls one-piece suits list. We found that most customers choose competitive swimwear girls one-piece suits with an average price of £20.00.

The competitive swimwear girls one-piece suits are available for purchase. We have researched hundreds of brands and picked the top brands of competitive swimwear girls one-piece suits, including ARENA and more.

Written by

Keira Murphy

Keira Murphy is an outdoorsy girl who loves sports and the outdoors. She's from the UK, but now lives in New York. Keira also has a YouTube channel where she uploads videos of her playing different sports, exploring new places or doing outdoor activities with friends. She started her channel because she wanted to share her love for sports and the outdoors with others who may not be able to get out as much as they would like due to injury, disability or other reasons. Her favorite sport is basketball!