Running & Training

The Best Girls’ Athletic Two-Piece Swimsuits

This post contains affiliate links. As an Amazon Associate we earn from qualifying purchases.

Our picks are based on Amazon bestseller rankings, Amazon customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.

Selecting the right athletic two-piece swimsuit for girls is crucial for comfort and performance during swimming and other water activities. A well-fitting suit can prevent distractions and allow for full freedom of movement, ensuring young athletes can focus on their training and enjoy their time in the water.

SaleNo. 1
The Children's Place,Girls,2-Piece Tankini Swimsuit,Seagrove Stripe,Medium
  • FABRICATION: 80% recycled polyester/20% spandex tricot body, 100% recycled polyester jersey lining, imported
  • TOP: Square neck, sleeveless with cross-back straps, back cut-out
  • BOTTOMS: Pull-on stretch waist
  • FEATURES: UPF 50+ sun protection, allover stripes
No. 2
Girls' Swimwear Size 10-12 Swimsuits Two Piece Bathing Suits for Teens Trajes De Baño para Niñas Swim Casual...
  • Soft Fabric: This teen's Bikini 82% nylon + 18% spandex blend is so comfy, it’s lightweight but tough, hugs you gently (not tight) and stays breathable even when it’s sweltering out. The smooth fabric doesn’t chafe, so you can rock it all day by the...
  • Vibrant Contrast Trim Design: The set stands out with bold, bright contrasting trim (think neon accents against solid base colors) that pops vividly—adding a fun, energetic touch while keeping the silhouette modern and age-appropriate
  • Adjustable Strap & Pad Details: This bikini top features a smooth curved neckline design, along with wide and adjustable shoulder straps.It also includes removable chest pads, letting her customize support and coverage to her comfort level
  • Size Tips: Our teen swimwear features removable soft-padded cups, providing growing girls with comfort and confidence.If your size falls between two measurements, refer to the bust/hip size chart—ensure a snug (not tight) fit while swimming
SaleNo. 3
Green Swimsuits for Teens Girls Bathing Suit Two Piece Sport Bikini Sets Trajes De Baño para Niñas Green...
  • Soft Fabric: This teen's Bikini 82% nylon + 18% spandex blend is so comfy, it’s lightweight but tough, hugs you gently (not tight) and stays breathable even when it’s sweltering out. The smooth fabric doesn’t chafe, so you can rock it all day by the...
  • Vibrant Contrast Trim Design: The set stands out with bold, bright contrasting trim (think neon accents against solid base colors) that pops vividly—adding a fun, energetic touch while keeping the silhouette modern and age-appropriate
  • Adjustable Strap & Pad Details: This bikini top features a smooth curved neckline design, along with wide and adjustable shoulder straps.It also includes removable chest pads, letting her customize support and coverage to her comfort level
  • Size Tips: Our teen swimwear features removable soft-padded cups, providing growing girls with comfort and confidence.If your size falls between two measurements, refer to the bust/hip size chart—ensure a snug (not tight) fit while swimming
SaleNo. 4
Kanu Surf Girls' Tanya Beach Sport Athletic Bikini, Bobby, 8
  • High Quality UPF 50+ Nylon Tricot
  • Lined front & back
  • Available in Sizes 2 through 14
  • Matching Rashguard and boardshort available
SaleNo. 5
Girls Bathing Suits Size 10-12 Two Piece Black Swimsuits for Teen Trajes De Baño para Niñas Black Swim Color...
  • Soft Fabric: This teen's Bikini 82% nylon + 18% spandex blend is so comfy, it’s lightweight but tough, hugs you gently (not tight) and stays breathable even when it’s sweltering out. The smooth fabric doesn’t chafe, so you can rock it all day by the...
  • Vibrant Contrast Trim Design: The set stands out with bold, bright contrasting trim (think neon accents against solid base colors) that pops vividly—adding a fun, energetic touch while keeping the silhouette modern and age-appropriate
  • Adjustable Strap & Pad Details: This bikini top features a smooth curved neckline design, along with wide and adjustable shoulder straps.It also includes removable chest pads, letting her customize support and coverage to her comfort level
  • Size Tips: Our teen swimwear features removable soft-padded cups, providing growing girls with comfort and confidence.If your size falls between two measurements, refer to the bust/hip size chart—ensure a snug (not tight) fit while swimming
No. 6
Haloumoning Girls Swimsuits Bikini Set Adjustable Straps Two Piece Color Block Girls' Swimwear with Chest Pad...
  • Comfortable Fabric: This girls swimsuits is made with quick-drying and stretch material that is lightweight, breathable, skin-friendly and durable, providing maximum comfort and flexibility. With added padding for extra support, it's the perfect swimsuit...
  • Unique design: Enjoy the perfect summer day in this gorgeous color block bikini set! The adjustable spaghetti straps and bikini top pair perfectly with the high-waisted bottom for a flattering and comfortable fit
  • Suitable for a variety of places: Make a splash with this versatile girls' swimwear that's perfect for any water activity! Whether your little one is hitting the pool, beach, or water parks, this stylish suit will keep them comfortable and confident. It's...
  • Multiple Colors Available: This swimsuit comes in multiple colors, including orange, pink, hot pink, turquoise, nude pink, neon green, sky blue and purple. These colors are all very stylish and attractive, giving your girl more choices when choosing...
SaleNo. 7
Queenstyle Girls Swimsuit Size 10 12 Tankini Set Kids Bathing Suits Color Blocking Two Piece Girls' Swimwear...
  • 🌴👙Comfortable Fabric: Our girls swimsuit made from soft and breathable high-quality elastic fabric, quick-drying, durability, preventing fading. This girls swimsuit is comfortable against the skin and perfect for long hours of wear. The fabric is...
  • 🌴👙Unique Design: This girls tankini set features a tank-style top with color-block trim and drawstring sides for adjustable length and a flattering fit. This girls' swimwear offers a tailored fit that is comfy, offering a lively and youthful vibe...
  • 🌴👙Elasticity & Support: The girls bathing suits is designed to offer both aesthetic appeal and support. The cuts around the chest and waist are carefully crafted to provide moderate support and comfort. The adjustable straps ensure a secure fit...
  • 🌴👙More Occasions: This tankini swimsuit is not just for swimming, but also perfect for summer beach days, vacations, and sunbathing. Whether playing beach volleyball, just relaxing by the pool or engaging in water activities, this girls tankini...
SaleNo. 8
Eddie Bauer Girls' UPF 50+ Swim Bikini Bottom and Racerback Tankini Set, Waterspout, Large
  • EDDIE BAUER LIFESTYLE: Built on a legacy of adventure-driven innovation, Eddie Bauer is committed to a sustainable and inclusive future for all. By utilizing materials and methods that minimize environmental impact, we strive to build an outdoor culture...
  • SUN-SAFE 2-PIECE SET: Gear up for the ultimate summer with a coordinated High-Neck Tankini and Bikini Bottom set designed for backyard sprinklers, pool parties, and ocean waves. Both pieces offer UPF 50+ protection, providing a high-performance shield for...
  • ACTIVE RACERBACK TANKINI: Engineered for high-energy play, this sporty high-neck top features a fully lined interior and comfortable, stretch shoulder straps. The racerback silhouette provides a secure, stable fit that won't shift or slip during swimming...
  • MODEST BIKINI BOTTOMS: Designed for total peace of mind, these coordinating bottoms feature a smooth stretch waistband and soft elastic leg openings for a snug, reliable fit. The 4-way stretch fabric and full-coverage silhouette move with her during every...

Last update on 2026-10-16 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Girls’ Athletic Two-Piece Swimsuits

Key Features to Consider

  • Fabric: Look for durable, chlorine-resistant fabrics like polyester or nylon blends. These materials hold their shape and color longer, even with frequent use in chlorinated pools. Quick-drying properties are also beneficial.
  • Fit and Support: Ensure the suit offers a secure yet comfortable fit. The top should provide adequate support without digging in, and the bottoms should stay in place during active movements. Adjustable straps or drawstrings can enhance customization.
  • Coverage: Athletic styles often prioritize function over excessive coverage. Consider the desired level of modesty for the wearer, looking at the cut of the bottoms (e.g., briefs, boy shorts) and the style of the top (e.g., tankini, halter, racerback).
  • Durability and Construction: Flatlock seams help prevent chafing and are more durable. Reinforced stitching and high-quality elastic are indicators of a suit built to last through rigorous training.

Choosing the Right Style

  • Racerback Tops: These offer excellent freedom of movement for the shoulders and are a popular choice for competitive swimmers.
  • Tankini Tops: A tankini provides more coverage than a traditional bikini top and can be a good option for those seeking a balance between sportiness and modesty.
  • Boy Short Bottoms: These offer more coverage and can feel more secure during active play or training compared to traditional bikini bottoms.
  • Brief Bottoms: A classic choice, offering less coverage but maximum flexibility for swimming strokes.

Care and Maintenance

  • Rinse the swimsuit in cold, fresh water immediately after each use to remove chlorine, salt, and sunscreen.
  • Hand wash with mild soap if necessary, avoiding harsh detergents.
  • Do not wring or twist the fabric; gently squeeze out excess water.
  • Lay flat to dry away from direct sunlight, which can fade colors and degrade fabric.

Frequently Asked Questions

What makes a swimsuit suitable for athletic training?
Athletic swimsuits are typically made from durable, chlorine-resistant fabrics that offer a secure fit. They prioritize freedom of movement and often feature designs that stay in place during active swimming.
How should a girl's athletic swimsuit fit?
It should fit snugly without being uncomfortably tight. There should be no gaping or excessive digging from straps or waistbands. The suit should stay in place when moving.
What is the best fabric for an athletic swimsuit?
Polyester and nylon blends are generally preferred for their durability, chlorine resistance, and quick-drying properties. Spandex is often included for stretch and shape retention.
How do I clean an athletic swimsuit?
Rinse thoroughly with cold, fresh water after each use. Hand wash with mild soap if needed, and always air dry away from direct heat or sunlight.
Are tankini tops good for sports?
Yes, tankini tops can be suitable for sports, especially those with a racerback or supportive strap design. They offer more coverage while still allowing for good mobility.
What is the difference between boy short bottoms and brief bottoms?
Boy short bottoms provide more coverage, extending further down the leg, which can offer more security. Brief bottoms are more traditional, offering less coverage but maximum flexibility for swimming.

How we compare Running & Training

1 Specifications: we compare the key features and specifications listed by the manufacturer and on Amazon.
2 Customer ratings: we take into account the average Amazon rating and the number of reviews.
3 Price: we check the current price and highlight notable deals.
4 Updates: comparisons are refreshed regularly as prices and availability change.

Our comparisons are reviewed and updated regularly to reflect the latest products and prices.

Was this article helpful?

Thanks for your feedback!

Thanks — we'll work to improve this article.