A woman wearing a brown one-piece swimsuit with a white polka dot pattern stands on a sandy beach with trees and blue sky in the background.

A woman standing on a sandy beach wearing a brown one-piece swimsuit with white polka dots, shown from the back.

A woman wearing a one-piece swimsuit with a dark brown base and white polka dots, photographed outdoors against a blurred neutral background.

A woman wearing a brown one-piece swimsuit with white polka dots stands on a sandy beach under a clear blue sky.

A woman wearing a one-piece swimsuit with a brown base and white polka dots, standing on a sandy beach with trees and blue sky in the background.

A woman on a sandy beach wearing a one-piece swimsuit with a brown and white polka dot pattern. She is stretching her arms across her chest under a clear blue sky.

A woman with curly brown hair sits on a sandy beach wearing a one-piece swimsuit with a brown base and white polka dots, looking back over her shoulder toward the camera.

A woman sitting on a sandy beach wearing a brown one-piece swimsuit with white polka dots, seen from behind.

A woman on a sandy beach wearing a brown one-piece swimsuit with white polka dots, shown from behind to highlight the open back and strappy design.

A woman wearing a one-piece swimsuit with a brown base and white polka dots, sitting on a sandy beach with the ocean and sky in the background.

COCO RUBII ONE PIECE

Name: COCO RUBII ONE PIECE
Brand: koziiswim
SKU: 770150465051
Price: 139.0 AUD
Availability: InStock

$139.00

By koziiswim

Size

Our swimwear is designed to be quite firm fitting compared to "fashion" swimwear so our sizing may feel a bit smaller than you are used to. We do suggest sizing up a size from your 'normal' size when wearing Kozii One pieces if you are in between sizes.

Female Size Guide

AUS SIZE	US SIZE	CHEST	HIPS	TORSO
Girls 6	/	58–62cm \| 22–24 in	58–63cm \| 22–24 in	42–45cm \| 16–17 in
Girls 8	/	62–67cm \| 24–26 in	63–68cm \| 24–26 in	45–49cm \| 17–19 in
Girls 10	/	67–71cm \| 26–28 in	68–73cm \| 26–28 in	49–53cm \| 19–20 in
Girls 12	26	71–73cm \| 28–28.7 in	73–78cm \| 28–30 in	53–56cm \| 20–22 in
Girls 14/Ladies 6	28	73–75cm \| 28–29 in	78–83cm \| 30–32 in	56–60cm \| 22–23 in
Ladies 8	30	80–85cm \| 31–33 in	83–88cm \| 32–34 in	60–65cm \| 23–25 in
Ladies 10	32	85–90cm \| 33–35 in	88–93cm \| 34–36 in	65–70cm \| 25–26 in
Ladies 12	34	90–95cm \| 35–37 in	93–98cm \| 36–38 in	70–75cm \| 27–29 in
Ladies 14	36	95–100cm \| 37–39 in	98–103cm \| 38–40 in	75–80cm \| 29–30 in
Ladies 16	38	100–105cm \| 39–41 in	103–108cm \| 40–42 in	80–85cm \| 31–33 in
Ladies 18	40	105–110cm \| 41–43 in	108–113cm \| 42–44 in	85–90cm \| 33–35 in
Ladies 20	42	110–115cm \| 43–45 in	113–118cm \| 44–46 in	90–95cm \| 35–37 in
Ladies 22	44	115–120cm \| 45–47 in	118–123cm \| 46–47 in	95–100cm \| 37–39 in
Ladies 24	46	120–125cm \| 47–49 in	123–128cm \| 48–53 in	100–105cm \| 39–41 in

100% CHLORINE TOUGH (CT) FABRIC — Due to the limited amount of stretch in this fabric, if you fall between sizes, we suggest selecting the larger size. Sizing up in all CHLORINE TOUGH (CT) one pieces is recommended.

Male Size Guide

SIZE	RACER	JAMMER	HIPS	WAIST
Boys 6	6	6	55cm	22"
Boys 8	8	8	60cm	24"
Boys 10	10	10	65cm	26"
Boys 12	12	12	70cm	28"
Boys 14	14	14	75cm	30"
Boys 16/Mens 14	XS	— (Racer only)	80cm	31"
Mens 16	S	XS/S	85cm	32"
Mens 18	M	S/M	90cm	34"
Mens 20	L	M/L	100cm	36"
Mens 22	XL	L/XL	105cm	38"
Mens 24	XXL	XL/XXL	110cm	40"

100% CHLORINE TOUGH (CT) FABRIC — Due to the limited amount of stretch in this fabric, if you fall between sizes, we suggest selecting the larger size. Sizing up in all CHLORINE TOUGH (CT) one pieces is recommended.

Active swimwear garments need to be a perfect fit in order for the wearer to gain the most out of their swimwear.

The "perfect fit" is a very individual thing as everyone has different body shapes and sizes and different requirements as to how they like to wear their swimwear. Some like to wear their swimwear 'really tight' while others like to go for more comfort.

In our girls and women's swimwear please read the product and fabric description for the styles as not all styles will suit all body shapes and sizes.

We tend to use all our styles on a regular basis so if you find a style you like then you can always look for garments in this same style to purchase when we release them out in the different printed fabrics.

Sizing can vary considerably for one pieces, if you are long in the body i.e. from neck to crutch then you will need a larger size to accommodate for the length of your body.

PLEASE NOTE: THE BELOW IS A GUIDE ONLY WHICH IS BASED ON OUR SWIMWEAR. MEASUREMENTS/SIZING WILL VARY SLIGHTLY WITH DIFFERENT FABRICS AND STYLES.

Fit reference: Charlie Ladies 8, Lily Ladies 10, Kristy Ladies 12, Kalani Ladies 8

Quantity

You asked, we listened! Ladies 14 is officially joining the Coco Rubii family. Ladies 14 is now available for pre-order. Orders ship within 2–3 weeks max.

If you're ordering a few things, we'll send them together to keep things efficient. Need one item in a hurry? Just place it as a separate order and we'll get it out to you first.

Introducing Coco! Sweet, playful and effortlessly chic. This one-piece combines a rich dark chocolate brown base with soft pale yellow dots for a fun take on a classic polka dot print. A timeless colour combination with a playful twist. *

The Rubii One Piece design is based on the much-loved Elite-X One Piece, it features that sleek open back and wrap-around torso for a fit that moves with you. We’ve added playful new strap configurations to give you even more ways to wear Kozii your way.

Designed in-house at Tweed Heads, printed and made in Australia, and exclusive to Kozii. Worn by Diving Australia and trusted by swimmers who train hard. Locked-in fit, nothing shifting, session after session.

✔ Exclusive dotty print in rich chocolate brown & pale yellow

✔ Signature Rubii cut: open back, thin binding, secure locked-in fit

✔ High-performance GRS Recycled fabric, built to outlast the season

✔ Made for training, competition, and your daily swim

Kozii fits firm for performance — we suggest sizing up from your usual size.

* Please note that the dots in this print are a pale yellow. See swatch photo in the gallery for an accurate representation.

More details

Our new Rubii One Piece has been created in collaboration with our strong and inspiring Team Kozii athletes!

Designed based on the much-loved Elite-X One Piece, it features that sleek open back and wrap-around torso for a fit that moves with you. We’ve added playful new strap configurations to give you even more ways to wear Kozii your way. More choice, more fun, in Kozii!

Kozii swimwear is proudly designed and made in Australia, blending high-performance fabrics with style and durability. Trusted by competitive swimmers and Diving Australia athletes, every piece is tested for comfort, support, and longevity. Our sustainable approach, including recycled fabrics, ensures your swimwear performs in training, competition, and everyday pool or beach sessions.

True-to-size performance fit
Open-back design allows flexibility and movement
Wide straps for secure, comfortable support

Model Sizes
Bronte is wearing a Ladies 8
Height: 175cm | Chest: 81cm | Waist: 63cm | Hips: 88cm

Please refer to our Size Guide for best fit. If you’re between sizes or prefer a more secure feel, consider sizing up. Need help choosing the right size? Contact us - we’re happy to help.

GRS-certified recycled fabric (80% recycled polyester, 20% spandex)
Muscular compression with excellent durability
Chlorine-resistant for long-lasting performance
Quick-drying, soft, and breathable
Maintains shape and colour despite repeated pool and sun exposure

To keep your swimwear performing at its best:

Rinse thoroughly with fresh water after each use
Do not leave rolled up in a damp in a towel
Hand wash gently with mild detergent to remove chlorine
Avoid rough surfaces that may snag fabric
Follow all care label instructions

With proper care, your swimsuit will maintain its shape, colour, and performance, keeping it looking and feeling great season after season.

AUS SIZE	US SIZE	CHEST	HIPS	TORSO
Girls 6	/	58–62cm \| 22–24 in	58–63cm \| 22–24 in	42–45cm \| 16–17 in
Girls 8	/	62–67cm \| 24–26 in	63–68cm \| 24–26 in	45–49cm \| 17–19 in
Girls 10	/	67–71cm \| 26–28 in	68–73cm \| 26–28 in	49–53cm \| 19–20 in
Girls 12	26	71–73cm \| 28–28.7 in	73–78cm \| 28–30 in	53–56cm \| 20–22 in
Girls 14/Ladies 6	28	73–75cm \| 28–29 in	78–83cm \| 30–32 in	56–60cm \| 22–23 in
Ladies 8	30	80–85cm \| 31–33 in	83–88cm \| 32–34 in	60–65cm \| 23–25 in
Ladies 10	32	85–90cm \| 33–35 in	88–93cm \| 34–36 in	65–70cm \| 25–26 in
Ladies 12	34	90–95cm \| 35–37 in	93–98cm \| 36–38 in	70–75cm \| 27–29 in
Ladies 14	36	95–100cm \| 37–39 in	98–103cm \| 38–40 in	75–80cm \| 29–30 in
Ladies 16	38	100–105cm \| 39–41 in	103–108cm \| 40–42 in	80–85cm \| 31–33 in
Ladies 18	40	105–110cm \| 41–43 in	108–113cm \| 42–44 in	85–90cm \| 33–35 in
Ladies 20	42	110–115cm \| 43–45 in	113–118cm \| 44–46 in	90–95cm \| 35–37 in
Ladies 22	44	115–120cm \| 45–47 in	118–123cm \| 46–47 in	95–100cm \| 37–39 in
Ladies 24	46	120–125cm \| 47–49 in	123–128cm \| 48–53 in	100–105cm \| 39–41 in

COCO RUBII ONE PIECE

Female Size Guide

Male Size Guide

Customer Reviews

Recently Viewed

100% Australian Made

RECYCLED FABRICS

Afterpay

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INFORMATION

CUSTOMER CARE

We acknowledge and pay respects to the Bundjalung people, the traditional custodians of the land on which we now operate at Tweed Heads and recognise their continuing connection to land, waters, and culture. We pay our respects to the first Australians and their elders past, present and emerging.

Currency

COCO RUBII ONE PIECE

Female Size Guide

Male Size Guide

Customer Reviews

Recently Viewed

100% Australian Made

RECYCLED FABRICS

Afterpay

We acknowledge and pay respects to the Bundjalung people, the traditional custodians of the land on which we now operate at Tweed Heads and recognise their continuing connection to land, waters, and culture. We pay our respects to the first Australians and their elders past, present and emerging.