BioTracker Full Brief
A high-waisted brief with full coverage and a soft, flat waistband that does not dig in, made from super-fine modal with Paire’s trademarked NudeTech™. BioTracker™ changes colour gradually with wear and washing, giving a replacement prompt over time. An antibacterial RegSilk Protein™ Fibre gusset keeps it fresh and soft against the skin.
Colour:
Size
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.
Learn More
Take your time. Make sure it feels right.
We want you to feel confident in your Paire. Take the time to try your new piece, check the fit and see how it feels. If it’s not right for you, you have 100 days to return it for a refund or exchange.
Learn More
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.
Sizing Chart
BioTracker Full Brief
| XS | S | M | L | XL | 2XL | 3XL | |
|---|---|---|---|---|---|---|---|
| AU |
6-8
|
8-10
|
10-12
|
12-14
|
14-16
|
16-18
|
18-20
|
| US |
0-2
|
4-6
|
8-10
|
10-12
|
12-14
|
14-16
|
16-18
|
| Hips (CM) |
85-90
|
90-95
|
95-100
|
100-105
|
105-110
|
110-115
|
115-120
|
| Waist (CM) |
60-65
|
65-70
|
70-75
|
75-80
|
80-85
|
85-90
|
90-95
|
In between sizes? We suggest sizing up.
Style with
Style with
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 sits softly against the skin all day.
Product Features
This is not your ordinary pair. Made with fancy things like our sustainable silk. So you can feel things like the perfect amount of stretch, without ever sagging, bending, or snapping.
Our trademarked NudeTech™ gives every pair 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.
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.
I have purchased a couple of four packs of this underwear. The first set lasted a few months before the leg elastic came away. They were so comfortable and lovely fabric I reordered. The next set lasted a couple of months but the elastic on the waistband is fraying. Ugh. I want to love these but they should last longer given the price.
Bought a pair of high waisted full brief on BF sale and it fits so well, plus wedgie free! But the seam is starting to fall apart and I’ve only washed it less than 10 times! Also bought a few pairs in the boxer style so I'm hoping it won’t have the same problem otherwise I’m not sure if it’s worth it…
I was buying 3 pairs . Jyst picking my sizing and a notice came up . So I thought oh ok I’ll have them insdead . I got one pair . For 33 pound I found that way to expensive for 1 pair they are good however. But feel cheated
Perfect for sweaty tropical weather. Dry over night when traveling
I am very sad that you are discontinuing these. They are the best pants I have ever had. Soft elastic and lovey fabric.
I’ve purchased many pairs of these undies and they have always been the most comfortable I’ve owned, so I’ve been a loyal customer. Unfortunately, I’m very disappointed with my latest purchase. The glue around the gusset is disintegrating despite following the correct washing instructions, and every pair from this particular batch is doing the same thing. One pair the waist elastic has come loose, unravelled and is unsightly so needs to be binned. Not good enough for the price.
I’ve never experienced this with my previous purchases, so it seems to be an issue with this batch. Given the cost per pair, I expected much better quality and unfortunately I won’t be purchasing them again.
Love these. So comfortable.
So slim and invisible under clothes.
No riding up , no “wedgies”.
Look excellent, good quality & fit comfortably.
Made up with these
I ordered a pair to try before committing to a drawerful and the fit was fine but the nude color was a most unattractive hue and for the time lag to deliver as well as the price I will stay with another popular brand for the time being
Comfyand good fit!
Size
Beautiful fabric, wonderful and comfortable cut..
I just love these knickers. Not too tight/loose pull them on and no need to adjust the crutch they just fit. Upon hearing that they will soon be phased out I have purchased quite a few. I often wonder why, when a product is so great it gets pulled out of production. Now I need not worry as I have Paire BioTracker full briefs to last for at least 10 years. They feel so good on the skin too.
If there are any unsold please send them to me. They will never be matched.
BioTracker Full Brief
I found this brief about a year ago and fell in love with them. I am so sad that Paire decided to discontinue this brief. Why when you find something that is perfect it goes on the chopping block. I hope you reconsider Paire to keep this brief.
The biotracker brief is super soft and comfortable, barely feels like it's there which is great. I'd give it 5 starts but I've only been using several of these briefs for two months and after one month the edges started fraying which makes me think they are going to fall apart really quickly. The elastic bands felt a bit too tight for the first wear but then stretched to a comfortable fit.
Unfortunately on 1 pair on 2nd wash the top elastic came off. All stitching undone. Threw it away.
The best comfortable, breathable, light undies. Great for everyday and travel.
i LOVE these nickers…they are superior to the ones I ordered and wore forever a few years ago. Congratulations….they are terrific!
BioTracker Full Brief
While i worry about the longevity of fused versus stitched seams, the modal fabric is delightfully lightweight!
I love thrse knickers as they are super comfortable AND do not show through your clothes. Double win!
BioTracker Full Brief
Great to wear under jeans no ride up
Suprised me how quick they dry, comfy and discreet.
BioTracker Full Brief