Woman wearing a black swimsuit against a white background

Black swimsuit with open back worn by a person on a white background

Black swimsuit with open back worn by a model on a white background

Woman wearing a black swimsuit on a white background

Woman in a black swimsuit standing on a sandy beach with grass and water in the background

Woman in a black swimsuit standing on a sandy beach with grasses.

Woman wearing a black swimsuit with cut-out design on a white background

Woman wearing a black one-piece swimsuit on a white background

Black swimsuit worn by a person on a white background

Black swimsuit with cut-out design on a white background

CT MIDNIGHT BASIC ONE PIECE

Name: CT MIDNIGHT BASIC ONE PIECE
Brand: koziiswim
SKU: 770320256010
Price: 120.0 AUD
Availability: InStock

$120.00

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

3 in stock in Size L12

Quantity

Pre-Order

A quick heads up, some sizes are flying out the door! The good news: we're made right here in Australia, so 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.

Mix, Match & Save! Grab any 2 CT Plains and get $25 off

Want more coverage? We made this for you.

Introducing the CT Midnight Basic One Piece designed with extra length through the body, more room through the width, and fuller coverage for women who want a more modest cut without compromising on performance.

Built for comfort, coverage, and confidence, this one piece suits training, competition, or recreational swimming. Supportive shoulder straps keep everything secure and in place, whether you're doing laps in the pool or catching waves in the surf. Crafted from Chlorine Tough, UPF 50+ Italian polyester, this one-piece offers durability, quick-drying comfort, and excellent shape retention, making it perfect for training, competition, or everyday laps.

✔ Longer length for swimmers and anyone wanting extra room

✔ More generous fit through the width for a comfortable,
non-restrictive feel

✔ Fuller coverage for women who prefer a more conservative cut

✔ Supportive, comfortable shoulder straps that stay in place

✔ Made for training, competition, or leisure swimming

✔ Crafted from high-performance, sustainable recycled fabric

✔ Durability, quick-drying comfort, and excellent shape retention

More details

The Ct Midnight Basic One Piece is crafted for swimmers who want style, coverage, and performance in a single swimsuit. Its thoughtful design ensures a secure, flattering fit for training, competition, or all-day wear.

Key Features:

Fuller coverage front and back for modesty and comfort
Wide crossover straps & supportive back strap for stability and freedom of movement
Raised neckline for improved bust coverage and smooth water flow
Front lined for comfort and modesty
Versatile performance: perfect for lap swimming, training, competition, or casual pool and beach wear

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.

Built for a firm, supportive fit that moves with your body, whether you're training, competing, or wearing it all day. Check the sizing guidance below to find your best fit.

Model Sizes:

Rachel wears Ladies size 16
Courtney wears Ladies 16 | Height: 180cm | Chest: 92cm | Torso: 80cm | Waist: 84cm | Hips: 114cm

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.

Crafted from premium Chlorine Tough, UPF 50+ Italian Polyester, this one-piece is designed to perform swim after swim.

100% chlorine resistant
Quick drying with excellent colour retention
Maintains shape over time
UPF 50+ sun protection
Front and back lined with quality chlorine-proof lining
100% Polyester
Built for durability to extend the life of your swimwear.

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

CT MIDNIGHT BASIC ONE PIECE

Female Size Guide

Male Size Guide

Mix, Match & Save! Grab any 2 CT Plains and get $25 off

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

CT MIDNIGHT BASIC ONE PIECE

Female Size Guide

Male Size Guide

Mix, Match & Save! Grab any 2 CT Plains and get $25 off

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.