What size should I select in the Classic Square Neck one piece?

This style runs true to size with a firm, sculpting fit. If you’re between sizes or have a long torso or curvier hips, go up one size. Suits A–J cup sizes. See the women’s swimwear size guide for measurements when selecting your size.

Is this a supportive one piece swimsuit for bigger busts without underwire?

Yes. The InvisiBust Support Technology uses a panelled, fully lined bodice to lift and hold without bulky cups or underwire. It’s designed for A–J cup sizes and is praised for how comfortable it is to wear.

Is the Classic Square Neck one piece see-through when wet?

No, this is a fully lined swimsuit is made with recycled lining for reliable coverage in and out of water. The panelled bodice also keeps the fabric flat so it doesn’t go sheer when wet.

Is the fabric UPF50+ and chlorine resistant for pool use?

Yes. The recycled fabric is UPF50+ (blocks 98% of UV rays) and ultra chlorine resistant. Rinse after every swim and line dry out of direct sun to keep colour and elasticity strong.

Can the Classic Square Neck One Piece fit up to an E cup?

Yes. The Classic Square Neck One Piece is designed to support a wide range of bust sizes, from A to J cup sizes. Many women with larger busts love this style for its supportive, secure fit and wear it in their usual clothing size.

Does the Classic Square Neck have tummy control?

Yes. The Classic Square Neck One Piece is designed with a fully lined and carefully panelled bodice for a supportive, firm fit that helps flatter and shape the body. The elegant lines are designed to feel secure and sculpting, while the fit may vary depending on your body shape and personal preference.

Textured Classic Square Neck One Piece Swimsuit
Monochrome Texture

Name: Classic Square Neck MONOCHROME TEXTURE
Brand: UNE PIECE
SKU: CSNTD-CBB-6
Price: 317.0 NZD
Availability: InStock
Rating: 4.7 (1904 reviews)

$317.00 NZD

Colour:

Our best-selling and most-loved swimsuit since the day it was launched. Featuring an elevated square neckline with removable-bows that creates two beautiful looks. A fully lined one piece in luxurious textured fabric.

Wildly flattering and confidence boosting - it will be the swimsuit you reach for on repeat. This product has a generous fit. If you are in between sizes, we recommend choosing the smaller of the two. This relates only to styles in this textured fabric.

BUST SUPPORT: Excellent bust support without cups or padding. Perfect for any bust size.
BOTTOM COVERAGE: High coverage. Our fullest coverage.
COMPRESSION: A firm, supportive fit that features panelling that lifts the bust and contours the body. Swimwear should fit snuggly when dry, so it will remain supportive when wet.

Super-supportive InvisiBust Support Technology - a fully lined and carefully panelled bodice designed for a supportive and firm fit
Sustainable UPF50+ fabric blocks 98% of UV rays
Ultra chlorine resistant
Pilling and sun cream resistant
UNE PIECE swimwear is made from recycled and sustainable fabrics and linings

Fast Shipping - Australia

We offer fast and reliable shipping options from our Brisbane warehouse:

Express: 2-4 business days
Standard: 3-7 business days

Find all shipping times at unepiece.com/shipping.

Method	Time	Cost
Express	2-4 business days	FREE - Orders over $250 $9.95 - Orders under $250
Standard	3-7 business days	FREE - Orders over $200 $8.95 - Orders under $200

BUY ONE GET ONE 50% OFF: See promotion terms.

Sale items are not eligible for refund: exchange or store credit only, depending on the promotion. Earrings, underwear, and bralettes are final sale, no return nor exchange.

For orders outside the promotion: Starting a return or exchange is easy! Exchanges and store credits are free.

Exchange - Free exchanges must be initiated and received within 14 days of your order’s delivery date.
Return for store credit - Free returns for store credit must be initiated within 14 days of your order’s delivery date.
Return for original form of payment - Returns must be initiated and completed within 14 days of your order’s delivery date. Mail-in returns have a $9 handling fee per return label (which is waived if you opt for store credit or an exchange!)

All returned products must be unused, with original tags attached and hygiene stickers intact.

Learn more at unepiece.com/returns.

Our first model wears size AU 8 (US 4). She is 179cm (5'10.5") tall with an 84cm (33") bust, a 69cm (27") waist and 94cm (37") hips. Our second model wears size AU 8 (US 4) and is 155 cm (5’1”) tall.

We follow standard sizing guidelines and make our products true to size.

Our swimsuits are constructed with a firm fit to flatter your shape. If you are between sizes, we recommend choosing the larger of the two sizes. For example, if you wear a size 10 in the top but a size 12 on the bottom (or vice versa) we recommend you purchase a size 12.

Find size measurements and international size conversions at unepiece.com/sizing.

Main: 66% Recycled Nylon 25% Nylon 9% Elastane Lining: 78% Recycled Nylon 22% Elastane

To keep your UNE PIECE looking beautiful, please carefully follow our care instructions:

Cold hand wash
Do not soak, bleach or dry clean
Do not spin or tumble dry
Do not iron
Line dry out of direct sunlight
Do not pack or store when wet
Remove any excess water and dry without delay
Separate light colours from dark before washing

CM IN

AU/UK	Bust	Underbust	Waist	Hips
US	Bust	Underbust	Waist	Hips
6 (XS)	76 - 80	64 - 68	59 - 63	86 - 90
8 (S)	81 - 85	69 - 73	64 - 68	91 - 95
10 (S)	86 - 90	74 - 78	69 - 73	96 - 100
12 (M)	91 - 95	79 - 83	74 - 78	101 - 105
14 (M)	96 - 100	84 - 88	79 - 83	106 - 110
16 (L)	101 - 105	89 - 93	84 - 88	111 - 115
18 (L)	106 - 110	94 - 98	89 - 93	116 - 120
20 (XL)	111 - 115	99 - 103	94 - 98	121 - 125
22 (XL)	116 - 120	104 - 108	99 - 103	126 - 130
24 (XXL)	121 - 125	109 - 113	104 - 108	131 - 135
2 (XS)	29.9 - 31.5	25.2 - 26.8	23.2 - 24.8	33.9 - 35.4
4 (S)	31.9 - 33.5	27.2 - 28.7	25.2 - 26.8	35.8 - 37.4
6 (S)	33.9 - 35.4	29.1 - 30.7	27.2 - 28.7	37.8 - 39.4
8 (M)	35.8 - 37.4	31.1 - 32.7	29.1 - 30.7	39.8 - 41.3
10 (M)	37.8 - 39.4	33.1 - 34.6	31.1 - 32.7	41.7 - 43.3
12 (L)	39.8 - 41.3	35 - 36.6	33.1 - 34.6	43.7 - 45.3
14 (L)	41.7 - 43.3	37 - 38.6	35 - 36.6	45.7 - 47.2
16 (XL)	43.7 - 45.3	39 - 40.6	37 - 38.6	47.6 - 49.2
18 (XL)	45.7 - 47.2	40.9 - 42.5	39 - 40.6	49.6 - 51.2
20 (XXL)	47.6 - 49.2	42.9 - 44.5	40.9 - 42.5	51.6 - 53.1

Size	AU/UK	US	EU/FR ES/PT	DE	IT	JP
XS	6	2	34	36	38	5
S	8	4	36	38	40	7
S	10	6	38	40	42	9
M	12	8	40	42	44	11
M	14	10	42	44	46	13
L	16	12	44	46	48	15
L	18	14	46	48	50	17
XL	20	16	48	50	52	19
XL	22	18	50	52	54	21
XXL	24	20	52	54	56	23

This product has a generous fit. If you are in between sizes, we recommend choosing the smaller of the two. This relates only to styles in this textured fabric.

How to measure

Bust: Using a flexible tape measure, measure across the fullest part of your chest, ensuring the tape measure is straight across your back.
Underbust: Measure directly under your bust, where the band of a bra would sit.
Waist: Measure around your natural waistline — this is the narrowest part of your torso, usually right above your belly button.
Hips: Stand with your heels together and measure around the fullest part of your hips and bottom.

Overall rating: 4.712185 / 5 from 1904 reviews.

AI Generated Review Summary

The Classic Square Neck MONOCHROME TEXTURE swimsuit is praised for its flattering look, excellent quality, and supportive fit. Customers love its one-piece design, soft and sustainable fabric, and the beautiful color. The product is also noted for its UV protection and chlorine resistance.

Summary topics

Appearance (8%): Customers raved about the flattering look of the product, with many mentioning that it looks great.
One-Piece Design (8%): Customers raved about this one piece, with many expressing their love for it and calling it perfect and beautiful.
Product Quality (15%): Many customers loved the quality of the product, describing it as excellent, great, amazing, and very nice.
Comfort (12%): Customers appreciated how these bathers feel on, describing them as soft, comfortable, and great.
Bathing Suit Satisfaction (8%): Customers expressed satisfaction with the bathers, stating they are the best they have ever bought.

Review topics: ["feel","fit","quality","issues","fabric","looks","style","colour","size","material","cut","shipping","shape","coverage","design","swimsuit","neckline","straps","customer service","support","lining","pattern","texture","bathers","padding","structure","comfort","piece","shoulders","construction"].

Review highlights

"Absolutely divine bathers, the colour, style and fit are great and I feel comfortable and confident" — Stacey B.
"Beautiful high quality fabric, love the look with the bows, I think it elevates the look." — Carmen
"Stunning swimsuit, gorgeous fabric, fit and support." — Janelle R.

Reviews

Ok l lii o be

"Ok l lii o be my brown polka dot square neck bathers. It fits so well and is structured to give you good support. I’ve had so many compliments. The quality is amazing. Highly recommend"

— Mrs S. (5/5)

Omg ❤️ as a woman/mother

"Omg ❤️ as a woman/mother of three I’m very self conscious about wearing bathers in public even at family gatherings. But these bathers are amazing and I felt great about myself they are supportive and feel amazing on full coverage I felt comfortable and confident. These are worth every penny you spend on these I absolutely love these I will be buying more in different colours. ❤️❤️"

— PAUL D. (5/5)

Absolutely the best bathers and

"Absolutely the best bathers and worth every cent! For a midsize mum who used to hate getting into bathers you can’t get me out of these and I’m finally enjoying swimming again with my kids! They fit nice and snug, holding everything in place and look incredibly stylish with the extra tie up shoulders that can be removed. I think I’ve bought nearly every colour cos they also look great under shorts or long skirts having drinks and nibbles by the pool ☺️"

— Lisa N. (5/5)

I honestly cannot get enough

"I honestly cannot get enough of this swimwear. They look gorgeous and my husband loves them on me. The print is flattering and the swimwear looks great when I am at any size. I love love love the bow detail, it is a little something extra and adds a bit of fun. I could not be happier! Thank you Une Piece!!"

— Caitlin C. (5/5)

Great quality swimsuit and the

"Great quality swimsuit and the fit is really nice overall however the arm holes are cut a little tight. Otherwise, it’s comfortable, flattering and well made."

— Emma S. (4/5)

Love the print and style.

"Love the print and style. However as a smaller chested person they don't give me much shape. The bows are a nice touch and I like that they are removable."

— Angie G. (4/5)

This is the second piece

"This is the second piece I’ve purchased from Une Piece. The fit, the cut, the support are all incredible! I’m not a fan of buying swimwear over the years but now that I’ve found swimwear that provides all round comfort and support I will never shop anywhere else. Good job on this piece guys!"

— Karen E. (5/5)

Unreal quality! Feels like a

"Unreal quality! Feels like a dream to wear! Super supportive and flattering, while still being fashionable. I get lots of compliments everytime I wear it! Definitely would purchase again"

— Alexandra H. (5/5)

These are the best bathers.

"These are the best bathers. Flattering on my bigger frame and very supportive. This is my third purchase and I love the pattern"

— Joanne W. (5/5)

Fits perfectly, the colour is

"Fits perfectly, the colour is so beautiful and vibrant and it’s very true to size. very thick beautiful material!"

— Michelle P. (5/5)

Q&A

Frequently Asked Questions

Both our Crinkle and Classic one piece swimsuits are designed with supportive bust features. Our Crinkle cut swimwear has superior built-in bust support with removable padded inserts, giving it a soft, flexible, and supportive fit. Our Classic one piece features InvisiBust Support Technology for excellent bust support with a firmer, more sculpting feel on the body.

Textured Classic Square Neck One Piece Swimsuit
Monochrome Texture

How to measure

AI Generated Review Summary

Summary topics

Review highlights

Reviews

Ok l lii o be

Omg ❤️ as a woman/mother

Absolutely the best bathers and

I honestly cannot get enough

Great quality swimsuit and the

Love the print and style.

This is the second piece

Unreal quality! Feels like a

These are the best bathers.

Fits perfectly, the colour is

Q&A

Frequently Asked Questions

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Size	AU/UK	US	EU/FR ES/PT	DE	IT	JP
XS	6	2	34	36	38	5
S	8	4	36	38	40	7
S	10	6	38	40	42	9
M	12	8	40	42	44	11
M	14	10	42	44	46	13
L	16	12	44	46	48	15
L	18	14	46	48	50	17
XL	20	16	48	50	52	19
XL	22	18	50	52	54	21
XXL	24	20	52	54	56	23

Size	AU/UK	US	EU/FR ES/PT	DE	IT	JP
XS	6	2	34	36	38	5
S	8	4	36	38	40	7
S	10	6	38	40	42	9
M	12	8	40	42	44	11
M	14	10	42	44	46	13
L	16	12	44	46	48	15
L	18	14	46	48	50	17
XL	20	16	48	50	52	19
XL	22	18	50	52	54	21
XXL	24	20	52	54	56	23

Textured Classic Square Neck One Piece Swimsuit Monochrome Texture

AI Generated Review Summary

Summary topics

Review highlights

Reviews

Ok l lii o be

Omg ❤️ as a woman/mother

Absolutely the best bathers and

I honestly cannot get enough

Great quality swimsuit and the

Love the print and style.

This is the second piece

Unreal quality! Feels like a

These are the best bathers.

Fits perfectly, the colour is

Q&A

Textured Classic Square Neck One Piece Swimsuit
Monochrome Texture

Size	AU/UK	US	EU/FR ES/PT	DE	IT	JP
XS	6	2	34	36	38	5
S	8	4	36	38	40	7
S	10	6	38	40	42	9
M	12	8	40	42	44	11
M	14	10	42	44	46	13
L	16	12	44	46	48	15
L	18	14	46	48	50	17
XL	20	16	48	50	52	19
XL	22	18	50	52	54	21
XXL	24	20	52	54	56	23