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Women's Underwear >

BioTracker Classic Bikini

$29.00

Any 4 socks or undies for 5% off.
Any 6 socks or undies for 10% off.
Any 10 socks or undies for 15% off.

Discount applies at checkout.
All packs excluded.

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A seamless classic brief made from super fine modal and RegSilk Protein™ Fibre. Engineered with Paire's trademarked NudeTech™ and BioTracker feature for superior hygiene. Super antibacterial, and soft on the skin.

Body: 88% Super Fine Modal (Tree Fibre), 12% Spandex. Gusset: 95% RegSilk Protein™ Fibre (85% Super Fine Modal, 10% Mulberry Silk), 5% Spandex.

Pay off your Paire in a few weeks by selecting ‘Afterpay’ at checkout.

We’ll foot the bill on shipping for domestic orders over A$120. Free worldwide shipping over A$200.

No questions asked. No shipping costs. We've all ordered things online but sometimes they just don't feel right. At Paire, if you have got the wrong size or just don't feel good, you have full 100 days to return it for a full refund.

Super-soft tree fibres

Powered by NudeTech™. Feels like a second skin.

Anti-smell & antimicrobial

RegSilk™ fibres stop bacteria from building up.

Never sweaty, always breezy

And refuses to reveal itself under tight pants. 

Brown

This is not your ordinary brief. Made with fancy things like our sustainable silk and signature squat-proof technology. So you can feel things like the perfect amount of stretch, without ever sagging, bending, or snapping. 

Our trademarked NudeTech™ gives your briefs that special touch. Made from plant-based Modal, it’s what makes them feel like a second skin—like you’re wearing nothing at all.

Made with RegSilk™—our regenerated silk cocoon protein fibres—which has antibacterial and anti-smell properties to keep your most sensitive bits happy and to stop bacteria from building up. The world’s first Pilates-proof panties. Thrush? Don’t know her. 

Not sure how old your underwear is?

With busy lives and schedules, most of us aren’t keeping tabs on when we last spruced up our drawers. So consider these undies your reminder app — their handy tracker changes colour with wear and time so you can see how long they’ve been in rotation for.

Designed with active proteins that sense external stimuli, BioTracker™ lets you decide when it’s time for a refresh.

Customer Reviews

Based on 328 reviews
76%
(249)
15%
(48)
5%
(15)
3%
(9)
2%
(7)
L
L.M.

The softest most comfortable underwear ever. I will not be buying anything else but Paire from now on!

C
Customer
Size (AU): 10-12
Purchased size: M
How it fits: True to size
Lipstick and bio tracker bikini comparison

The lipstick fabric is stretchy (bought XS to M) but they were too short / sat too low in the back. The bio tracker bikini’s (bought M) sit higher, which I prefer. So I exchanged the lipstick for the bio tracker and am happy with my purchase

D
D.Y.

I've been back to this item over and over again.

S
Shayne M.
Size (AU): 10-12
Purchased size: M
How it fits: True to size
Comfortable and light

Exactly as advertised. The fabric is lovely - breathable, light and very comfortable.

L
Leah m.
Size (AU): 14-16
Purchased size: L
How it fits: True to size

BioTracker Classic Bikini