Women's Underwear >

BioTracker Mid Waisted Full Brief


“Feels like you have nothing on!”

- Georgie

Select Colour


Select Colour

Back in stock reminder

Leave your email below, and we'll let you know as soon as this item is back in stock.

Oops, it looks like there was an error with your submission. Please try again later.

You're in! We'll let you know when it's back.

A seamless mid-waist 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. 


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. 

Medical specialists recommend changing your regular undies every 6 months with regular use, but most forget and don’t realise their underwear have long passed its healthy usage cycle.

With the help of this material innovation, say goodbye to not-so-hygienic underwear. Designed with active proteins that sense external stimuli, this smart tracker changes colour when it's time to make the switch. Now that’s smart tech.

Bundle 'n Save

Customer Reviews

Based on 258 reviews

I have been a long time fan of PAIRE socks but only recently did I give the underwear a try and only because they were on sale .
Well I am hooked , I love the mid-waisted full brief . I am 60+ female and have finally found the perfect undie ! Hooray !

Melissa C.C.
Love it!

I was a bit skeptical when I first tried it as I couldn't find one that I truly liked. But this ticked all the boxes for me. Soft, comfortable, just the right amount of fit.

Jenny L.
Size (AU): 14-16
Purchased size: L
How it fits: A bit tight

It’s beautiful and soft, but the sizing wasn’t true. It was a bit too tight.


Women's Mid-Waisted Full Brief

Daily work undies

These are my go-to for work (office job) comfy full brief no show under fitted pants.