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Women's Underwear >

BioTracker Classic Bikini

$29.00

Any 4 undies or socks for 5% off.
Any 8 undies or socks for 10% off.
Any 15 undies or socks for 20% 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 all orders over $100. Free VIP express shipping for all orders over $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. But nasty bacteria can build up on the undies that we use regularly, making them uncomfortable and unhygienic to wear

That’s why we’ve invented BioTracker — a smart paire of underwear that does the tracking for you. Designed with active proteins that sense external stimuli, this handy tracker changes colour with wear, so you can decide when it’s time for a refresh.

Customer Reviews

Based on 263 reviews
78%
(205)
14%
(38)
3%
(9)
2%
(4)
3%
(7)
J
Jan M.F.
Size (AU): 14-16
Purchased size: L
How it fits: True to size

These knickers are fabulous…. So comfy.

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

love these undies. So comfortable and light. I have the mid waist brief and the bikini and both are comfortable. I have thrown all my other underwear out and have ordered the bras as well. This firm is also very easy to deal with. Had an issue with one of my orders and it was fixed quickly, very impressed.

P
Pamela H.
Size (AU): 6-8
Purchased size: S
How it fits: True to size
First time

I purchased the BioTracker Classic Bikini with the hope it would be a good item for travel.
I wanted underwear that was lightweight, quick to dry and most of all comfortable for travel. I have trialled my purchase on a 5-day break and found it ticked all the boxes.

S
Siwei G.
Size (AU): 14-16
Purchased size: L
How it fits: True to size

BioTracker Classic Bikini

M
Merrilyn P.
Size (AU): 10-12
Purchased size: M
How it fits: True to size

Beautiful fabric, so comfortable. Highly recommend