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
Rating: 4.0 (2 reviews)

$139.00

2 reviews

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

Love it or swap it. Not sure on size? Our Size Guide has you covered, with easy returns if it’s not perfect.

Sold out three times. A Kozii favourite for a reason.

Chocolate brown, pale yellow polka dots and a sleek open back. The Coco Rubii One Piece combines a secure performance fit with freedom to move, from training sessions to your daily swim.

Designed with Team Kozii athletes and made in Australia from GRS-certified recycled fabric. Exclusive to Kozii.

IMPORTANT TO NOTE: The dots are pale yellow. See the gallery swatch for an accurate colour reference.

Some sizes now on Pre-Order!

Some sizes are going fast! The good news is we’re made right here in Australia, so orders will be on its way within 2 weeks.

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.

More details

Created in collaboration with Team Kozii athletes, the Rubii One Piece builds on the much-loved Elite-X with a sleek open back, wrap-around torso and a fresh strap design. Made for training, competition and everyday swims, it combines freedom of movement with a firm, secure performance fit.

Open-back design allows flexibility and freedom of movement.
Wrap-around torso creates a close, supportive feel.
Thin binding and a fresh strap configuration give the signature Rubii cut its distinctive finish.
Firm performance fit is designed to feel like a second skin.

About the print

Coco pairs a rich chocolate brown base with soft pale yellow polka dots for a playful twist on a classic. Designed in-house at Tweed Heads, printed in Australia and exclusive to Kozii. The dots are pale yellow; see the swatch photo in the gallery for an accurate colour reference.

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.

This is performance swimwear, designed to fit like a second skin. It will feel firmer than fashion swimwear by design. If you're between sizes or prefer a more relaxed fit, size up.

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

Not sure which size to choose? Check out our Size Guide to find your best fit.

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.