• A girl wearing a dark teen swimsuit with a criss-cross strappy back detail sits on a log on a sandy beach with the ocean in the background.
  • A woman sitting on a log on a sandy beach wearing a dark teen swimsuit.
  • Two young girls standing on a sandy beach wearing black teen swimwear. The girl on the left wears a black two-piece bikini, and the girl on the right wears a black long-sleeve one-piece swimsuit.
  • Two women standing on a beach from behind, wearing matchinggirls swimsuits with long sleeves and high-waisted bottoms.
  • A young woman with long brown hair sits on a white patio lounge chair next to a swimming pool, wearing a long-sleeve one-piece teen swimsuit with an open back and side cutouts.
  • A girl wearing a black long-sleeve one-piece girls swimsuit with side cutouts sits on a white woven poolside lounge chair next to a swimming pool.
  • A woman sitting on a white patio chair by a swimming pool, viewed from behind to show the back of a black long-sleeve one-piece girls swimsuit with crisscross cutout straps.
  • A young woman with long light brown hair wearing a black long-sleeve swimsuit, leaning against a white paneled wall.
  • A woman shown from behind wearing a black long-sleeve swimsuit strappy top and matching black bottoms, leaning against a white paneled wall.
  • A woman viewed from behind wearing a black long-sleeve teen swimwear with crisscross strappy detailing on the back, set against a blurred outdoor poolside background.
  • A woman wearing a black long-sleeve girls swimsuit with an open crisscross back design, posing on a wooden deck next to a potted cactus against a white paneled wall.
  • A young woman with long light brown hair sits on a white woven lounge chair next to a swimming pool, wearing a black long-sleeve one-piece tween swimsuit.
  • Four girls wearing black swimwear sets pose together on and beside a swimming pool against a white wall.
  • Three young female swimmers posing in black athletic swimwear against a white wall.
  • A young woman with long light brown hair wearing a dark navy long-sleeve bodysuit, standing in front of a white brick wall with a cactus on the left.
  • Four young female swimmers standing on a wooden deck in front of a glass sauna, wearing matching black one-piece swimsuits. Two wear crop tops and two wear long-sleeve tops.
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Black Long Sleeve Open Back Girls Swimsuit

Black Long Sleeve Open Back Girls Swimsuit

She Wants to Feel Grown Up. You Want Her to Stay a Kid a Little Longer.

Fernleigh Avenue girls swimwear is created for both.

$74.95 AUD
$74.95 AUD
Sale Sold out
Taxes included. Shipping calculated at checkout.
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Model Is Wearing Child's 16, Under Bust 71cm, Bust 83cm, Hips 85cm, Torso Length 63, Waist 70cm

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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.

Black Teen Swimwear With Long Sleeves & Secure Coverage

Meet the Black Long Sleeve Open Back Swimsuit, timeless teen swimwear designed to give growing girls confidence, comfort and dependable coverage. Combining protective long sleeves with Fernleigh Avenue’s signature open back, this one-piece offers a sporty, age-appropriate style she will feel good wearing.

Made from premium eco-friendly fabric, this black swimsuit features UPF 50+ sun protection and a double-layered body for comfortable, worry-free wear at the beach or pool.

🌊 Features & Benefits

✔️ Classic Black Colourway
✔️ Signature Open Back Design
✔️ Long Sleeves for Additional Sun Coverage
✔️ UPF 50+ Sun Protection
✔️ Chlorine-Resistant, Eco-Friendly Fabric
✔️ Removable Breast Modesty Padding in Sizes 12–16
✔️ Double-Layered Body for Coverage and Comfort
✔️ Teen-Approved Fit and Parent-Trusted Coverage

✔️ Also available in Crop Bikini and Sleeveless

✔️ Also available in women’s sizes 6W, 8W, 10W and 12W. View the women’s sizes in black teen swimwear here

Please visit our sizing chart for measurements and help choosing the best fit.

Stylish & Practical Teen Swimwear

This long sleeve swimsuit is designed for swimming, surfing and active beach days while helping growing girls feel comfortably covered. The open back gives the classic black design a modern, sporty finish, while the one-piece silhouette stays secure during movement.

The long sleeves offer additional coverage from the sun, making this teen swimsuit ideal for beach holidays, swimming lessons, water sports and long summer days outdoors.

✨ Protective teen swimwear without compromising on style.

🌞 Premium Fabric for Real Summer Adventures

This teen swimwear is made from durable, eco-conscious fabric with built-in UPF 50+ sun protection. Its chlorine-resistant material is designed for regular wear at the pool and beach.

The body is double-layered for dependable coverage and comfort, while the sleeves remain lightweight and flexible for easy movement. Removable breast modesty padding in sizes 12, 14 and 16 gives developing girls additional coverage, support and confidence when they want it.

💛 Black Teen Swimwear Designed for Growing Girls

The Black Long Sleeve Open Back Swimsuit combines additional sun coverage with a stylish open back and secure one-piece fit. Practical, supportive and easy to move in, it is made for girls who want to swim, play and enjoy summer without constantly adjusting their bathers.

Finally, black teen swimwear designed specifically for the in-between years.

 

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  • Girls Swimwear
  • Girls Swimwear
Girls Swimwear

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.

Find More Key Features Here