Marli Sleeveless Open Back Girls Swimwear
Marli Sleeveless Open Back Girls Swimwear
“Girls Swimwear that Solves the Tween Struggle and Lasts More than One Summer”
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Age-appropriate, comfortable, and stylish girls swimwear- finally something you both agree on. Double-layered fabric and premium stretch mean more beach days, fewer replacements.
Swimwear Tweens Love
Sporty, simple and made for adventure our Sleeveless Marli Swimsuit is designed for confident swimwear tweens and teens who want a suit that keeps up with every splash, dive and wave. This sleek one-piece feels light and comfy in the water, with an athletic cut that lets kids move freely all summer.
Featuring our exclusive Marli print, it’s inspired by warm coastlines, sun-drenched sand and bold beach energy. Whether she’s surfing, learning laps or spending the whole day at the pool, this swimsuit supports active growing bodies with age-appropriate coverage and a fun, modern vibe.
Why Swimwear Tweens (and Parents) Love It
✔️ Sleeveless, Sporty Fit for easy movement in and out of the water
✔️ UPF 50+ Sun Protection to protect developing skin
✔️ Chlorine-Resistant & Fade-Resistant fabric for long-lasting colour
✔️ Double-Layered Body for comfort and coverage, no sagging tween swimwear
✔️ Eco-Friendly Materials that feel good and do good
✔️ Removable Modesty Padding in sizes 12, 14 & 16 for confident smoothing
✔️ True-to-Size Fit designed for real tweens and teens
Made for Real Swimwear Tweens, by a Real Mum
When age-appropriate tween and teen swimwear became hard to find, we created our own. This swimsuit is designed for real girls who want coverage without looking “too little,” style without being grown up, and durability that lasts more than one summer.
In Conclusion
What makes our teen swimwear different? It’s made by a mum who couldn’t find age-appropriate, stylish, and long-lasting swimsuits, so she created them. Designed for real teens, built for confidence, and made to last more than one summer.
✨ Shop the new collection now and help your teen feel confident, comfortable, and carefree, from poolside to seaside.


What Makes Fernleigh Avenue So Special
At Fernleigh Avenue, we prioritise quality, sustainability, and style by crafting our swimwear from eco-friendly materials with UPF 50+ sun protection.