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A woman wearing a black one-piece swimsuit stands outdoors in front of a wooden counter and green foliage, holding sunglasses.A woman modeling a dark navy ribbed one-piece swimsuit in an outdoor patio setting with wooden cabinets and green foliage in the background.
A woman wearing a black one-piece swimsuit stands at the edge of a swimming pool with lush green foliage in the background.A woman wearing a black ribbed one-piece swimsuit and a black wide-brim hat, posing outdoors in front of a dark blue wall with potted plants.
  • A woman modeling a dark navy ribbed one-piece swimsuit in an outdoor patio setting with wooden cabinets and green foliage in the background.
  • A woman modeling a black one-piece swimsuit on an outdoor patio with wooden cabinets, greenery, and a dark blue column in the background.
  • A woman modeling a black ribbed one-piece swimsuit in an outdoor setting with wooden kitchen cabinets and green foliage in the background.
  • A woman wearing a black ribbed one-piece swimsuit with a deep open back, photographed from behind in an outdoor kitchen setting with wooden cabinets and greenery in the background.
  • A black ribbed one-piece swimsuit with a square neckline and wide shoulder straps, shown flat against a solid white background.
  • A black ribbed one-piece swimsuit with wide shoulder straps and a scoop neckline, shown against a plain white background.
1 10

Rounded Square Neck One Piece Swimsuit

$199
$199
Why It's Worth It
Shipping calculated at checkout.

or 4 X $49.75 with

Arriving September 2026.
A square neck one piece swimsuit with 360° compression, removable moulded cups (A-F) and a high-cut leg designed to wear at the pool or styled as a bodysuit.

Bum coverage:

Bum coverage: Medium

Bust Support:

Bust Support: Medium

Compression:

Compression: Medium

Leg Cut:

Leg Cut: High

Colour: Matte Black
Torso Option Standard Torso Long Torso

Find your torso length

Size US 4 / AU 8 / EU 36
XS US 4 / AU 8 / EU 36
S US 6 / AU 10 / EU 38
M US 8 / AU 12 / EU 40
L US 10 / AU 14 / EU 42
XL US 12 / AU 16 / EU 44
2X US 14 / AU 18 / EU 46
3X US 16 / AU 20/ EU 48

Size Guide


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Details

Arriving September 2026.

A swimsuit, a bodysuit and a wardrobe staple in one. The Rounded Square Neck One Piece combines sculpting compression with a high-cut leg and the kind of versatility that earns it a permanent spot in your rotation - from the pool to wherever the day takes you.

• SQUARE NECKLINE - modern rounded square neckline with wider straps for comfort and support
• BUST SUPPORT - built-in shelf bra with removable moulded cups, suitable for A-F cup busts
• COMPRESSION - 360° power mesh through the midsection with no-dig design for a smooth, sculpted silhouette
• VERSATILE DESIGN - wear as a swimsuit at the beach or pool, or styled as a bodysuit
• FABRIC - Matte Luxe Jacquard Rib, fully lined (chlorine resistance 4/5)
• ALSO AVAILABLE IN LONG TORSO- shop the Long Torso version here

The one piece that doesn't have to choose between the pool and your wardrobe.

Shop All One Pieces

Fabric & Care

This swimsuit is crafted from our Matte Luxe Jacquard Rib - a textured, supportive fabric with a refined matte finish.

This swimsuit is crafted from our Matte Luxe Jacquard Rib - a textured, supportive fabric with a refined matte finish. Fully lined and built to hold its shape in and out of the water.

Outer:90% recycled polyester, 10% spandex
Lining: 86% polyester, 14% elastane
Power mesh: 72% nylon, 28% elastane

Sustainability isn't just about recycled materials - it's about choosing well made pieces that last season after season. With the right care, your Fearless swimwear will keep looking incredible for years.

Care Tips:
  • Cold hand wash only - this fabric is delicate
  • Rinse immediately after exposure to chlorine or spa water
  • Do not soak, iron or tumble dry
  • Dry in the shade

Then go have a nap - because laundry is the worst.

Country of Origin: China

What’s My Size

We recommend checking your measurements against our size & fit guide before ordering.

That said, it's a compressive swimsuit, designed to help you feel held and supported (like wearing your favourite activewear)!

ABOUT OUR MODELS:

Lyndi wears Size Small/AU 10/US 6
Height: 165cm (5’5”)
Bust: 93cm (36.6”)
Under bust: 82cm (32.2”)
Waist: 74cm (29.1”)
Hips: 103cm (40.5”)
Bra: AU 12C, UK/US 32C, EU 70C

Laura wears Size Large/AU 14/US 10
Height: 178cm (5’8”)
Bust: 105cm (41.3”)
Waist: 85cm (33.4”)
Hips: 109cm (42.9”)
Bra: AU 16G, UK/US 38G, EU 85I

Delivery & Returns

Swimsuit shopping doesn't have to suck.

We know we needed to make returns easy and affordable to spare you those awful change room lights - and help you try Fearless without regret or worry.

Click here for our returns and exchanges policy. And find our shipping info here.

FAQs

Does this have an underwire?


No. The Rounded Square Neck One Piece is wire-free with a built-in shelf bra and removable moulded cups for support and shape - no underwire needed.

What bust sizes does it suit?
Designed for A-F cup busts. The shelf bra and removable moulded cups provide support and coverage across a wider bust range than most one pieces.

Does it run true to size?
Yes. Choose your usual size based on our size guide. If you're between sizes, size up.

Can I wear it as a bodysuit?
Yes. The Rounded Square Neck One Piece is designed to work as both swimwear and a bodysuit - pair it with jeans, linen pants or a skirt and it looks intentional, not like you forgot to change.

How does the compression feel?
Supportive, not restrictive. The 360° power mesh through the midsection gives you a smooth, sculpted feel that's comfortable enough to wear all day - firm but never tight or uncomfortable.

Is it good for tummy control?
Yes. The 360° power mesh compression smooths and sculpts through the midsection with a no-dig design - no rolling down, no digging in.

What's the coverage like?
High-cut leg with medium bum coverage. The square neckline sits modern and structured - confident without being revealing.

What's the fabric like?
Matte Luxe Jacquard Rib - thick, textured and fully lined with a 4/5 chlorine resistance rating. Holds its shape in and out of the water.

Are colours true to photos?
Yes. Colours are photographed in natural light, though slight variation can occur depending on screen settings.

Style With

  • A woman wearing a black long-sleeve swim top and matching high-cut bikini bottoms, photographed outdoors near a pool with greenery in the background. A woman wearing a black long-sleeve swim top and matching high-cut bikini bottoms, photographed outdoors near a pool with greenery in the background.

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  • A woman modeling a black two-piece bikini in front of lush tropical green foliage. The bikini features a bandeau-style top with a small keyhole cutout at the center and high-waisted bottoms with a side tie detail. A woman wearing a black two-piece high-waisted swimsuit, shown from the back against a lush green tropical foliage background.

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View full details

Fabrication: Matte Luxe Jacquard Rib

  • Texture

    Three-dimensional matte finish

  • A woman modeling a dark navy ribbed one-piece swimsuit in an outdoor kitchen setting with wooden cabinets and green foliage in the background.

    Support

    Subtle compression

  • Chlorine resistance

    4/5

  • Best for

    Postpartum, bigger bust, tummy conscious

A technical line drawing showing the front and back views of a bodysuit on a body form, with handwritten feature callouts around the figure. This is not a clean product photo and functions as an explanatory diagram, so subject_type is Instruction Diagram rather than Product/Packaging.

Not Just a Swimsuit

The Rounded Square Neck One Piece is three things at once: a swimsuit, a bodysuit, and a piece you'll reach for on repeat. A modern square neckline with wider straps.


Why You Can Trust Our Sizing

We surveyed 15,000 women before designing a single item and we're still listening.

Every item is fitted and tested on two sizes - a 10/12 (C-Cup) and a 14/16 (E-Cup) - then trialled on real women in their 20s to their 60's. Because no two bodies are the same.

When our fabric ran small, we changed the sizing. Feedback beats data, every time.

Sizes XS-3X. Built for the body you actually have.

Size Guide: International

SIZEXSSMLXL2X3X
AUS8101214161820
US46810121416
UK10121416182022
EU36384042444648

Size Guide: Measurements

SIZEXSSMLXL2X3X
Bust85-9090-9595-100100-105105-110110-116116-122
Underbust72-7777-8282-8787-9292-9797-103103-109
Waist68-7373-7878-8383-8888-9393-9999-105
Hip95-100100-105105-110110-115115-120120-126126-132

Torso Length Guide

Torso Standard - Height below 169cm/67in

Torso Long - Height above 170cm/67in

Still Not Sure?

Finding a swimsuit that actually sculpts, supports and survives the ocean without a wardrobe malfunction? We used to think that was a myth too. Don't take our word for it - real women are already raving about the fit, the comfort and the "wait, this actually works" confidence Fearless delivers.
  • 5 stars: 19 (90%)
  • 4 stars: 0 (0%)
  • 3 stars: 1 (5%)
  • 2 stars: 1 (5%)
  • 1 star: 0 (0%)
This product has no reviews of its own. The merchant grouped it with related products, so the reviews shown are from across that group.
L
Lisa (New Zealand)

Great quality swimsuits and amazing customer service! Would definitely buy again ☺️

C
C.

I like the colour but i can see the lining perhaps its - just the wrong fit. I also should have paid more attention to the chest sizing as the shelf bra is very large and does not suit my small chest. It will be good for laps in the swimming pool though. Definetly a sporty style

C
Caitlin v (New Zealand)

I love this swimsuit. I feel super supported up top, covered on my bum and sucked in on the tummy. I wear it ALL the time with shorts or a skirt and it looks so cute. Only issue is the sizing, I ordered a large after reading lots of reviews (normally a size 10) and it's the perfect size, I never wear a size large so the sizing is definitely off.

P
Peta Nash (Australia)

I was worried about the torso length as I’m under 150cm tall and a size 12 but it is perfect. The compression is just right and not uncomfortable at all. I highly recommend you try

c
c.

Really happy with my purchase great quality

J
Jennifer H. (Australia)

Love the fit of this suit (my second fearless suit!). It is so supportive in all the right places!
Only problem is, when I went in the water, a huge air bubble got stuck in the top band of the suit. It looks like I have a floaty on or something. As a big busted girl (10E) I don’t love the extra attention it draws. I also haven’t had a swimsuit do this before.

S
Sarah Rhymes (Australia)

So happy! I originally order a M based of measurements but exchanged for a L and so glad I did! Fits so nice. I have a small bust and it doesn’t feel to roomy. The best thing is that it didn’t go big and baggy in the water some some suits can! The long torso is a GAME-CHANGER!! Won’t be my last purchase. THANK YOU FOR YOU HARD WORK!

D
D. (United States)

Loved the colour and compression! The fabric around the neckline/bust area was slightly loose, perhaps I could have gone down a size. Overall though I’m very happy with my swimsuit. I feel confident & absolutely love the bum coverage.

L
Leora (Australia)

Love my one piece! It holds me in the right places and is super comfortable to wear. It gives me better support than my compression wear. I have no doubt I will be wearing it instead. I accidentally ordered the wrong size and the team were wonderful to deal with. Absolute legends

P
Post as anonymous (Australia)

You feel so secure in these bathers. They hold you in tight in all the right places. Very comfortable. I feel very confident when wearing these bathers.

P
Post as anonymous (United Kingdom)

I love my suit ! It’s for the pool not the sun (Scottish weather :) I love the whole ethos behind this and that it’s a company actively telling me that my body is ok. I have a disability and my confidence can be low, this suit is set to get me back in the pool. I think these things may feel small, but can be life changing. The fit is good (had to exchange med for large as a UK size 12) It is a wee bit of a wiggle to get it on but have practiced and all good. Love the fit and love the colour. Thank you 🙏

E
Emily S. (Australia)

I absolutely love this swimsuit! I was a bit concerned about how tight it felt when pulling it on over my hips…but after a bit of a wiggle, it slides on and fits perfectly. I am 5ft 11 so I got the long torso option. It’s great - doesn’t feel like it’s pulling down on my shoulders at all. Love love love! ❤️

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Post as anonymous (Australia)

I am in love. First try on I was worried I wouldn't get it over my hips but once on... amazing!!
I love the straight neckline and as a girl who is 5'10' I've always struggled with one piece suits dragging down my shoulders but this one is just SO comfy!

L
Leora

Love love love this suit! I accidentally ordered the wrong size and luckily noticed before it was shipped. Within 5 minutes of sending fearless a message the order was fixed and problem was solved. The team and customer service cant be faulted!
The suit it self is brilliant! I love the thick material and how it holds everythibg in. I have no doubt it will double as shapewear too!
Will definitely be ordering another style!!

P
Post as anonymous (Australia)

Such a great fit! Crazy how swimmers that actually fit can make you feel great! Will be buying more!

S
Stephanie Wilkie (Australia)

Feels amazing, I can't believe something that is pretty compressive can also be comfortable. I have no idea how those thin straps could hold up my large boobs and it feel ok- it somehow works! Tummy felt good, length felt good. Was not too long at all.

A
Angelica Pupillo (Australia)

I couldn't love these more!!! The whole experience from seeing the story online, to the thoughtful packaging and the amazing swimwear itself!! The fabric is soft and really holds your body together making it the perfect bathing suit for diving under waves in! The cut is also perfect, I will totally be wearing this as a body suit too!! Love love love 10/10!

H
Hannah (Australia)

Love this one piece! It’s so flattering and comfortable. Love the tummy control and the colour range for this swimsuit is awesome. Can’t wait to purchase another!

P
Post as anonymous (Australia)

Absolutely stunning! Also incredibly versatile! I could totally wear this with some jeans and use it as a body suit for the day and hit the beach in the afternoon without having to worry about packing swimmers or changing! The compression of this is a life changer!

S
Steph (Australia)

Honestly it’s even better than I imagined!! Postpartum mum x 3, mum belly, long torso. It ticks so many boxes! I feel so held in and the bum coverage is great!! Imagine spanx but make it swim without feeling restricted. The option of long torso is a game changer for me :) I can’t wait for a summer where I don’t have to constantly adjust my swimmers! Really is worth the money!

C
Caz (Australia)

Overjoyed I have found a snatched in, forgiving one piece to fit my long torso, curvy, E-cupped mum bod! This is a beautiful piece with thick confident material to keep you safe from the surf and looking smooth and confident. Can’t wait to jump in the water!