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BioTracker Men's Boxer Trunk

$47.27

A close-fitting boxer trunk with a supportive front pouch and elastic 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:

Black

Size

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

  • Close-fitting boxer trunk cut for everyday support
  • Supportive front pouch for a secure fit
  • Elastic waistband that holds comfortably without digging in
  • Trademarked NudeTech™ for next-to-skin comfort with a barely-there, skin-like feel
  • BioTracker™ hygiene tracker built into the garment, its colour shifting gradually with wear and washing to show when a pair is ready to replace
  • Soft stretch that moves naturally with the body
  • Antibacterial RegSilk™ fibres that help stop bacteria building up
  • Breathable fibres for everyday comfort
  • Hypoallergenic and gentle on sensitive skin

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; dry flat in the shade.

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 Men's Boxer Trunk

S M L XL 2XL 3XL
Waist (INCH)
27-30
30-33
33-36
36-39
39-42
42-45
Side length (CM)
27
29
31
33
34.5
34.5

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.

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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.

  • 5 stars: 106 (72%)
  • 4 stars: 23 (16%)
  • 3 stars: 13 (9%)
  • 2 stars: 3 (2%)
  • 1 star: 2 (1%)
Some of the reviews shown are from related products the merchant grouped with this one.
D
Donna

Love these undies. Now my adult sons are asking for more for Christmas gifts after I have given them before.

R
Rodolphe Z.
Best boxer

Love the boxer Paire for too many reasons

E
Eric

Great material

E
Eric I.
Love them

Really comfortable material. Have 2 pair

P
Patrick F.
There ok, there are very well branded paire of undies

If I just put them on blindly there fairly sold but I don’t find myself looking forward to when there in the rotation. It’s a baggy fit and there’s a weird bit of fabric in the box section that is a bit bulky there.

They seem to wick sweat ok, nothing remarkable

M
Michelle K.
silky smooth and good length

Fabric feels great and is a good length. not too short (for 183cm).

J
Jude R.
Perfect

Will definitely re order, great fit and so comfortable.

L
Lachy W.

BioTracker Men's Boxer Trunk

O
Olga K.

BioTracker Men's Boxer Trunk

w
wayne h.

BioTracker Men's Boxer Trunk

G
Graham J.
Really comfy undies

Really comfy

J
John W.
Great

Really comfortable, will buy more pairs

T
Trudy W.
Great!

Hubby loves them and asked me to order more.

B
Brian L.

the underwear is so comfortable

C
Customer
Happy customer

These are the best undies I have ever worn.
I will fill my drawer with them.

C
Catherine M.
Excellent quality and super comfortable

A great product - super comfortable and soft. Will be buying again.

T
Terry T.

BioTracker Men's Boxer Trunk

L
Lara

Happy days! Quality favric composition and comfortable.

R
Ray S.
Comfort plus!

The BioTracker Boxer has been very comfortable to wear. Hardly know you are wearing them.
I would recommend and buy again.

K
Kerrie D.

BioTracker Men's Boxer Trunk

C
Customer
Super soft and comfortable

Great jocks.

H
Hung Y.C.
Comfy and stretchy

The best underwear I have ever worn

F
Faasisila S.
great product

So good to have trunks NOT made from heavy fabric - so light and comfortable.

A
Anne H.
Travel essential!

My husband finds the Boxer Trunk very comfortable and we are super pleased they can be washed and dried quickly while travelling. An excellent purchase!

S
Sue B.
Comfy Undies

Purchased these for my husband for upcoming overseas trip. He hasn't worn them yet but has tried on & says they're comfortable.

A
Adam G.
Fits not quite right

Fabric is quite good but the fit could be better. Too high waisted. Slightly too loose.

J
Jose A.

BioTracker Men's Boxer Trunk

H
Heather C.
Great product

So far so good. Like the feel and fit of the undies and socks. Will be interesting to see how they hold up with wash and wear over time. Definitely plan to replenish.

M
Marcus M.

BioTracker Men's Boxer Trunk

P
Paul H.

BioTracker Men's Boxer Trunk

C
Customer

BioTracker Men's Boxer Trunk

A
Alistair H.
Great boxer trunks for travelling

I bought a number of very lightweight boxer trunks for travel to Europe and the UK/Ireland. Besides the fact that they don’t take up much space in the suitcase and are lightweight, they are easily hand washed and dry quickly so are ideal for travel with. They are also very comfortable and breathable so are nice to wear

L
Lachlan B.
Nice, but…

These are really well made, and the material is so soft, but they are cut too tight in the leg, so I don’t find them comfortable. I’m disappointed, because they would otherwise have been great.

C
Carol W.

My husband loves these