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The ONE TWO
The ONE TWO
The Undies

Cotton, Made Silky.

Everything you keep cotton around for — it breathes, it wears all day — in a fabric that feels nothing like it. Slightly sheer, smooth as butter.

“It's like a caress.”
Julie S. · Verified Yotpo review, 23.07.26

Everything you keep cotton around for — it breathes, it wears all day — in a fabric that feels nothing like it. Slightly sheer, smooth as butter.

109 underwear reviews · 4.8
494 bra reviews · 4.8
Six colourways

You wanted cotton undies that felt elegant — the benefits of cotton without the schoolgirl feels.

It carries all the properties of cotton you love — cool to the touch, breathable, sweat-wicking, hypoallergenic — while feeling closer to silk against your skin. The reason is the fibre's structure: a perfectly round cross-section that produces almost zero friction against skin, a quality no conventional cotton fibre can replicate. The result is a fabric that is genuinely good for you, and genuinely pleasurable to wear.

85% cupro · 15% elastane
Made to standard
OEKO-TEX Standard 100 RCS 100 OK Biodegradable · fibre level
Details
More about our fabric

Our cupro is produced exclusively by a Japanese manufacturer who has held the process since 1931, from cotton fibres left over from cottonseed oil production that would otherwise be discarded. Blended with 15% elastane for stretch and recovery.

The yarn is certified OEKO-TEX Standard 100 — independently tested against over 100 harmful substances — and holds RCS 100 certification verifying its upcycled origin. At the fibre level it is also OK Biodegradable certified. The finished garment contains elastane, and we make no whole-product biodegradability claims.

Eco and supply chain credentials

Designed in Australia and manufactured by a world-class lingerie specialist in China — a facility that produces over 30 million pieces annually and employs more than 5,000 people, independently certified to GOTS, OEKO-TEX, BSCI, SEDEX, GRS and ISO 9001 standards.

These certifications aren't badges — they represent independent audits of how the people making your undies are treated, and the environmental standards the facility is held to.

GOTS OEKO-TEX BSCI SEDEX GRS ISO 9001
The wear test

Every pair, rated against the same conditions.

Condition
Thong $35
Bikini $35
Skyliner $40
Lines
Reported per garment. Leggings, trousers and denim are three different tests, not three rungs of one.
Invisible under everything — leggings, trousers, denim. No edge to print.
Flat, high-tech elastic minimises VPL
Flat, high-tech elastic and a longer leg line minimises VPL
Stays put
Twelve hours, seated and walking, no adjusting
Flat elastics, no edges to print
Minimal migration
Minimal migration, no roll-down
Breathability
Breathable, sweat-wicking
85% cupro · 15% elastane · 100% cotton gusset
85% cupro · 15% elastane · 100% cotton gusset
85% cupro · 15% elastane · 100% cotton gusset
Sensory
Tags, seams and edges against skin
Single tear-away tag, otherwise super stretchy and soft
Single tear-away tag, otherwise super stretchy and soft
Single tear-away tag, otherwise super stretchy and soft
Thong $35
Lines
invisible under everything — leggings, trousers, denim
Stays put
twelve hours, no adjusting
Breathability
breathable, sweat-wicking · 100% cotton gusset
Sensory
single tear-away tag, otherwise super stretchy and soft
Bikini $35
Lines
flat, high-tech elastic minimises VPL
Stays put
minimal migration
Breathability
breathable, sweat-wicking · 100% cotton gusset
Sensory
single tear-away tag, otherwise super stretchy and soft
Skyliner $40
Lines
flat, high-tech elastic and a longer leg line minimises VPL
Stays put
minimal migration, no roll-down
Breathability
breathable, sweat-wicking · 100% cotton gusset
Sensory
single tear-away tag, otherwise super stretchy and soft

Bikini

4.7 averageRated 4.7 out of 5
$35

The daily default.

The middle of the drawer: coverage at the back, clean lines at the hip, the cut that never asks a question. The pair you buy three of.

85% cupro · 15% elastane · flat elastics · sizes S–XXL
"Comfortable undies, cute colour, wore all day at work in surgery and then went for a run."
Sally H. · Bikini · 23 Oct 2025
See the Bikini →

Skyliner

4.8 averageRated 4.8 out of 5
$40

The high-waisted one that's never met grandma.

Pull it up for an ultra-high leg and '90s supermodel lines, or wear it lower on the days comfort wins. The wide waistband stays where you put it — "they don't roll down," as one customer puts it. The back edge runs a very discreet, high-stretch elastic — engineered for stability without digging in.

85% cupro · 15% elastane · wide waistband · discreet high-stretch back elastic · sizes S–XXL
"So comfortable, they don't roll down."
Ang · Skyliner, Touched by the Sun · 6 Aug 2026
See the Skyliner →

Thong

5.0 averageRated 5.0 out of 5
$35

The invisible one.

Elegant on her own, she embraces and compliments your curves. Invisible under everything, she's as suited to working out as going out. Breathable, super soft, with tear-away tags.

85% cupro · 15% elastane · flat elastics · sizes S–XXL
"I usually avoid thongs for everyday wear, but these changed my mind — super soft, zero digging, and they stay in place all day."
Nina · Thong · 12 Jan 2025
See the Thong →
The Bundle

Three or more, $4 off each.

Mix the styles, mix the colourways. Any three pairs or more and every pair drops $4 at checkout.

Thong and Bikini $31 each · Skyliner $36 each
Applies from the third pair. No code needed.
Build your three →
Colour

Six colourways.

The Blanc colourway on model
Blanc
Classic and fresh.
Jayde wears M
The Noir colourway on model
Noir
Sophisticated black that doesn't read as gym kit.
Christina wears S
The Touched by the Sun colourway on model
Touched by the Sun
Warm, rich pink, functional nude on most skin tones.
Ruby wears S
The Warm Sand at Dusk colourway on model
Warm Sand at Dusk
Flattering on everyone, functional nude on lighter skintones.
Jayde wears M
The Wine in the Library colourway on model
Wine in the Library
For the romantics. Disappears under clothes on tanned skintones.
Ruby wears S
Bikini in Forget-me-not
Forget-me-not
Fresh under denim, you won't forget them.
Nina wears S
Wearing Wine in the Library up top? The undies match. Bra + undies pair, $100 at checkout.
See the Wine Set →
Reviews

What you're saying.

109 underwear reviews · 4.8 rating
494 bra reviews · 4.8 rating
Yotpo, pulled 21 Aug 2026
I bought two pairs to try based on other reviews. I have to say they are as amazing as the reviews said. I'm keeping getting more :)
VannaSkyliner · Warm Sand at Dusk · 9 Aug
So comfortable, they don't roll down.
AngSkyliner · Touched by the Sun · 6 Aug
Obsessed with these, super comfy and love they are made of natural fibres. They look seamless under activewear too!
OliviaThong · 11 Jul 2026
As someone who sweats a lot in summer heat farming, it is breathable and it doesn't stink after a long day at work.
Aurelia T.Bikini · 7 Jan 2026
These fit great and stay on and don't slide around. I usually wear size 10-12 undies and purchased in Medium — perfect fit.
Winnie T.Skyliner · 23 Mar 2026
The fabric is light, and it feels and looks seamless.
Ljubica J.Skyliner · 4 Feb 2026
I never thought I'd say this, but I actually look forward to wearing a thong now!
Alison G.Thong · 3 Jan 2025
These undies are so comfortable I had to buy more & encouraged me to get rid of all the uncomfortable ones.
Lauren H.Bikini · 18 Apr 2025
Sizing

Your size

S to XXL, measured at the fullest part of your hip — level and snug, not tight. Between sizes, size up for a softer fit or down for more contour.

The ONE TWO size
Hip (cm)
S
90–96
M
97–104
L
105–116
XL
117–128
XXL
129–140
Questions
Is it cotton?

It starts as cotton. The fibre is cupro, regenerated from cotton linter — the short fibres left on the seed after ginning. The blend and the finishing treatment are ours: developed with our mill and made for no one else. 85% cupro · 15% elastane. Cool to the touch, breathable, certified to OEKO-TEX and GOTS. Cotton, made silky.

How do I wash them?

Our cotton, made silky, is a delicate fabric — cared for properly, it will stay with you for years. Machine wash at 40°C or below, in a delicates bag. It doesn't mix well with metal, so keep it away from anything with zips or hardware.

What's the gusset?

The gusset is 100% cotton.

Can I return undies?

For hygiene reasons undies can't be returned or exchanged unless they're faulty.

Same fabric as the bras?

Yes. Same technical silky cotton — our cupro, in a blend and finish made for us alone — same mill, same certifications. The bras add structure — the cup, the boning, the wire. The undies just get the fabric.

The other half

Same fabric. Two bras.

Le Original and Le Curve — flexible wires, structure built into the band, 7 years and 1,184 women personally fitted before either went on sale. $109, in the same six colourways as the undies.

Le Original
The standard fit.
Le Curve
Fuller bust, same band.

Hate bras? Our virtual fitting algorithm will get you started. Our 30-day wear guarantee on bras, with free returns and customer support, has your back if it's not perfect the first time.