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Women's Underwear

BioFlex™ Ultra Seamless Mid Brief (Final Sale)

$14.99
$26

Final sale items are not eligible for return, exchange, or online voucher if you change your mind.

By purchasing a final sale item, you agree that the item cannot be returned for a change of mind. We recommend choosing carefully to avoid disappointment and suggest contacting customer care for any assistance prior to purchasing.

Mid-rise, moderate-coverage seamless BioFlex™ brief that stays put all day.

Colour:

Black

Size

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Body: 86% BioFlex™ Nylon (50% Bio-based Nylon, 50% Nylon),14% Spandex. Gusset: 95% RegSilk Protein™ Fibre (88% Modal, 12% Silk), 5% Spandex.

Machine wash in a mesh bag on a gentle cycle below 30ºC, using a mild, enzyme-free detergent. No bleach, fabric softener or tumble drying; air-dry flat.

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.

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

Discount applies at checkout.
All packs excluded.

Sizing Chart

BioFlex™ Ultra Seamless Mid Brief (Final Sale)

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.

Second-skin softness

So comfy you’ll forget you’re wearing them

Irritation free

No seams, no tags, no constant readjusting

Easy breezy

Naturally breathable fabric keeps things comfy and breezy

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Product Features

BioFlex™ bends the rules of conventional fabric. Made from 50% recycled corn waste, our bio-based material is created through an innovative process in which starch glucose is extracted from straw and regenerated into a nylon fibre.

The result? A durable fabric that’s lighter than air and soft as butter. Superior breathability and four-way stretch. A skin-hugging fit that’s moves with you.

Undies that ride, roll and bunch up are a thing of the past. Featuring no-slip silicone grippers on the leg-line and moulded grip zones, you can trust these undies to stay put.

VPL who? A seamless construction creates a smooth silhouette, while laser cut edges eliminate lines under clothing.

Thanks to a gusset made with RegSilk™, our material of regenerated silk cocoon protein fibres, these undies keep you fresh all day. Beat odour. Stop bacteria in its tracks.

  • 5 stars: 8 (26%)
  • 4 stars: 6 (19%)
  • 3 stars: 2 (6%)
  • 2 stars: 9 (29%)
  • 1 star: 6 (19%)
S
Susan N.
Seamless brief

Comfortable, but I prefer the biotracker

V
Vanessa W.
Poor Quality

From my order I have had several pairs where the tape around the legs has started to come away. All care instructions have been followed. One pair was replaced but then others have started to have the same concern.

D
Deborah B.

BioFlex™ Ultra Seamless Mid Brief

A
Amy

ride up unlike other paire underwear I have

T
Tina L.
BioFlex ultra Seamless Brief

Sadly I was very disappointed with these briefs. They were not a patch on briefs I have purchased in the past which I thought were the same, they were not!
I do not like the fabric, it feels cheap compared to my last purchase, and the cut of the bioflex briefs is quite different to my last purchase, there’s not enough fabric in the cheek department and they tend to ride up. The waist feels tighter and the legs are looser, all in all quite uncomfortable.
Another disappointing aspect is that the elastic in the leg did not wear well, it appears to be glued on, not stitched and has come away on 2 of the 6 pairs I purchased, not great considering I’ve only had them for less than 3 months. Very disappointing, cannot recommend

R
Raquel H.

Unfortunately they don’t stay out of my bottom, they ride

J
Julie G.
Disappointed

I have several pairs of Paire undies and have usually found them to be comfortable, and as advertised. However, I was very disappointed in the BioFlex Ultra Seamless Mid Brief. They are comfy and stay in place, however after 1 wash the glue that holds the no-slip silicone grippers has started to give way leaving the silicone string to come off. The same thing has happened on the gusset. I am very disappointed, especially considering the price.

k
karin e.
Not good.

I have purchased three different types of Paire undies but these ones unfortunately are not great. After only two washes (in cold water on the gentle cycle) the binding (?) that is the sticky bit that is supposed to keep them in place has come away from the body of the pants. Very disappointing. Should have read reviews first as I’ve seen it has happened to other buyers as well. Would appreciate my order being refunded or all pairs of pants replaced with a different style.

Z
Zena H.
Rides up

These are not as comfortable as other Paire knickers I have bought. The sticky tape around the leg holes doesn’t work, and they rid up.

T
Tracey S.
Perfect for travelling

I have ordered Paire undies over the past few years - after watching Shark Tank Aus. Initially, it was just for a planned trip but now I wear them every day. They are comfortable, don't ride up and wash and dry well. Don't buy cheap and nasty undies, treat yourself to Paire.

S
Sally C.

Seam on one pair came apart and after a couple of washes they don’t stay in place

A
Allanna B.
Poor fit. Leg is too loose

My last few purchases of the brief pants has been disappointing as the leg is far too large

J
Jennine R.

BioFlex™ Ultra Seamless Mid Brief

D
Diane A.
Disappointed

The underwear ride up your bottom!

J
Julie W.
Love this brief

So soft and a great fit.

T
Terry T.
good product, though price-point is a little high

Much more comfortable than equivalently priced brands (CK, Boss etc) and much better quality... but a pricey option compared to Japanese retailers.

G
Gill H.

Very disappointed in these briefs, not as good as the ones I bought previously which were Nude Tech underwear with better leg seams

k
karen h.
Comfy undies

I only purchased one pair from a popup shop in Chadstone, however these have become my favourite. They are not the travel ones but these dry overnight too. I haven’t yet decided to buy more of the same or try the travel ones

N
Narelle B.
Disappointed

I regret to say that I am disappointed with the BioFlex briefs. I loved the NudeTech briefs, however.
The BioFlex feel lovely however they do not stay in place and the shiny band on the back leg area does not do anything to keep the briefs in place.
I will not buy again.
Extrememly disappointed.

K
Kerry T.
Third Order

This is my 3rd order of the Paire.
The larger size option in Lipstick travel range is great ( was 1 size previously).
The Bioflex I am not sold on 100%. I much prefer the previous fabric used that is more cotton based. These actually do slide on your butt also. Good sizing.

M
Mollie R.
BioFlex™ Ultra Seamless Mid Brief

Love this brand and have purchased many pairs of the BioTracker briefs. I was so pleased to see a seamless option available but like others I’m really disappointed with the longevity of the pieces. Every pair of my BioFlex Seamless have fallen apart at the seams or had sections come loose. This is especially disappointing given the price per pair. I will continue to purchase other pieces but would love if the quality issue on the seamless lines could be addressed

L
Lilli a.

BioFlex™ Ultra Seamless Mid Brief

D
Disha P.

BioFlex™ Ultra Seamless Mid Brief

A
Ann T.
Bioflex seamless brief

Really light and comfortable.

A
Aisha
Good but quality issues

I LOVE paire undies usually and am a repeat shopper. I was really excited when the ultra seamless briefs were added as a product because good quality no-show briefs are so hard to find. I really like the fit and feel of these, but there is a grippy tape-like strip along the edge that i guess is supposed to be a hem and stop the undies from riding up while still being ‘seamless’. On two of the three pairs I bought, this edge tape came loose and began peeling away after only one wear. I noticed it was peeling away even before I put them through the wash. The third pair has since had the same issue, but after maybe 3-4 wears. I was so disappointed! Hopefully paire trouble shoots this, because otherwise they would be a great product

E
Eja C.
Comfy, but quality issues

I LOVE paire undies usually and am a repeat shopper. I was really excited when the ultra seamless briefs were added as a product because good quality no-show briefs are so hard to find. I really like the fit and feel of these, but there is a grippy tape-like strip along the edge that i guess is supposed to be a hem and stop the undies from riding up while still being ‘seamless’. On two of the three pairs I bought, this edge tape came loose and began peeling away after only one wear. I noticed it was peeling away even before I put them through the wash. The third pair has since had the same issue, but after maybe 3-4 wears. I was so disappointed! Hopefully paire trouble shoots this, because otherwise they would be a great product

R
Raelene H.H.
Love them

Great fabric, very breathable and super lightweight! Ordering more but will size down. Excellent product

T
Tony
Good socks

As a gift for my girlfriend, it’s the best one

T
Tony
BioFlex™ Ultra Seamless Mid Brief

As a gift for my girlfriend, it’s the best one

A
Amanda D.

I love the bio tracker brief, but found these not as comfortable.

V
Vee C.
Comfy Bra

Excellent bra. Once you put it on you don’t feel it. Easy to hand wash and dry. Pads don’t need to be removed so no issues with trying to push those damn things back in. Another great item Paire!