Banner Section

BlackBlack
BlackBlack
BlackBlack
Underwear >

BioTracker Men's Boxer Trunk

$36.00

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.

Select Colour

Black

Select Size

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 Men's Boxer Trunk 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 86 reviews
65%
(56)
20%
(17)
10%
(9)
2%
(2)
2%
(2)
B
Brett G.
Comfort fit. True to size!

Comfortable fit and true to size. I found the material to be somewhat breathable but not anywhere near as cooling as I was expecting. The wicking technology probably works as no wetness but as for feeling any cooling benefits I didn’t feel cooler…There was some riding up on the legs but no more than most other brands. The jewels felt snug and well supported. They wash well and maintain shape after a few washes so far. I purchased a bundle on sale price with free shipping and for that reason I would say they were good value for the price paid.

S
Stacey F.

Best undies

S
Sandi M.

they are for an xmas present so will have to wait till then

C
C.
Feel good

Could have purchased the smaller size. But otherwise they a smooth and comfortable.

k
karen d.

Good. Accurate sizing.