Stone.kin – Organic Cotton Underwear Made for Comfort, Safety & Everyday Ritual

Organic cotton underwear buttery soft comfort. Our naturally nude essentials are crafted with the Earth in mind.

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Organic cotton rib brief in Sand color, showcasing comfort and a GOTS certified design on a male model's back.
Male model wearing a tailored brief made of GOTS certified organic cotton in sand color for ultimate comfort.
Mens Organic Cotton Brief - 3 Pack - Cross showing a soft, breathable design with a stylish back view.

Brief in Organic Cotton Rib - Sand with Tar Cross

Sale price$24.50 AUD Regular price$35.00 AUD
Select Your Size:

Select Your Colour:

Bone Lines Bone Brown Camel Camel Brown Tar Teal Sage Pandanus Lake Indigo Indigo Lake Brown Camel Camel Camel Forest Stone

Fast & Free Shipping on Orders over $120 to Australia, NZ , UK. US Orders over $150 (with duty and tax covered)

Made with GOTS Organic Cotton

OEKO-TEX® Certified

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Easy Returns

FINAL SALE

The Organic Cotton Rib Men's Brief Sand with Tar Cross is a balance of softness, structure, and sustainability. Tailored from GOTS-certified organic cotton rib, it delivers that signature Stone.kin comfort smooth on the skin, breathable through every wear, and shaped to move naturally with your body. A subtle touch of elastane provides gentle stretch, while the cotton leg binding ensures a seamless, irritation-free fit.

Finished with a rich cotton waistband and the minimal stone.kin logo, this brief embodies quiet confidence. The Sand with Tar Cross colourway grounds your everyday ritual earthy, refined.

Each Organic Cotton Rib Men's Brief Sand with Tar Cross is crafted from non-toxic, plastic-free materials, staying true to Stone.kin’s commitment to comfort without compromise. Designed for those who value simplicity, quality, and the calm that comes from natural materials.

At Stone.kin, we believe what you wear closest to your skin should feel honest. This piece does exactly that — soft, breathable, and deeply considered.

Key Features

  • GOTS-certified organic cotton rib
  • Naturally soft, breathable fabric
  • Gentle stretch
  • Cotton leg binding and waistband
  • Minimal stone.kin logo
  • Tone: Sand with Tar Cross


  • 5 stars: 382 (87%)
  • 4 stars: 39 (9%)
  • 3 stars: 5 (1%)
  • 2 stars: 8 (2%)
  • 1 star: 6 (1%)
Some of the reviews shown are from related products the merchant grouped with this one.
D
Dave

I now nearly have a pair for each day of the week - that's the goal: every colour combination there is. But the next step is to buy my woman a voucher ❤️

A
Anonymous

Good fit and comfy

A
Anonymous

Great colours & super comfortable

Z
Zara

Amazing

A
Anonymous

Simply perfect. Pure natural cotton comfort. The quality and fit is outstanding. I’ll be purchasing more.

D
Declan

Just love this brand, it’s my 4th purchase.

A
Antonio

terrific underwear, i've replaced all of my underwear now with stone kin and i am so chuffed. will continue to purchase as they wear down. (:

R
Ronnie

My wife put me on to these guys and finally a male underwear manufacturer that provides a soft stretch waist band that doesn't squeeze your stomach like an elastic band!!!
It's good to see someone is prepared to actually use the correct stretch materials instead of the cheap nasty ones used by the likes of Bonds.
As for fit, comfort and style, all excellent.
Highly recommended!

P
Paul

Love the forest Green its my new favourite colour. Stonekin briefs are so smooth and fit beautifully !

N
Nick

Feel really quality and look great

A
Anonymous

Excellent quality and customer service. Super comfortable and could not be happier with my purchases in the past and today.

R
Robert

Hello, I bought 6 pairs of these paints within this order and a further order in Nov 2025. Of the 6 pairs, 3 have torn where the waste band is stitched together on the side - see photos attached of two of the pairs. Messaged Stone Kin for comments but have not heard back. Colours are great but cannot recommend as the quality is really disappointing. I would expect that I am not the only person that has had this issue.

R
Robert

Hello, I bought 6 pairs of these paints within this order and a further order in Nov 2025. Of the 6 pairs, 3 have torn where the waste band is stitched together on the side - see photos attached of two of the pairs. Messaged Stone Kin for comments but have not heard back. Colours are great but cannot recommend as the quality is really disappointing. I would expect that I am not the only person that has had this issue.

R
Robert

Hello, I bought 6 pairs of these paints within this order and a further order in Nov 2025. Of the 6 pairs, 3 have torn where the waste band is stitched together on the side - see photos attached of two of the pairs. Messaged Stone Kin for comments but have not heard back. Colours are great but cannot recommend as the quality is really disappointing. I would expect that I am not the only person that has had this issue.

R
Robert

Hello, I bought 6 pairs of these paints within this order and a further order in Nov 2025. Of the 6 pairs, 3 have torn where the waste band is stitched together on the side - see photos attached of two of the pairs. Messaged Stone Kin for comments but have not heard back. Colours are great but cannot recommend as the quality is really disappointing. I would expect that I am not the only person that has had this issue.

A
Anonymous

Purchased for the kids dad for Father’s Day! He was super stocked. Said they were the nicest undies he’d ever worn.

A
Anonymous

Toooo GOOOD TO BE TRUE!!
Just ask HIM !! My SON ….

J
Joanne

Simply da BEST , in every way!!

A
Anonymous

These are the ONLY UNDIES MY SON WILL WEAR . YES !! He’s 46 and LOVES THEM!
From his MUM , JUM X

S
Shane

I’m so glad gray is back! This was my favorite color from the original brand. These really are the best undercrackers.

T
Troy

Such a stylish colourway. So comfortable and healthy. No toxins.

T
Troy

They look fantastic such a nice pop of colour. So soft and comfy too

J
Joanne

My Son loves these undies, I buy them for him all the time!!

P
P.

Great quality, soft, comfortable, sustainably made, and just so beautiful to wear!

J
Jason

Love these briefs they feel super comfort and fit well

A
Anonymous

Great fit and very comfortable

H
Harry

Second time buying these. I love how comfortable they feel. I’m all about the soft nature fabric with minimal branding. These are so sleek

J
Jed

Glad the XL was a good fit for the larger man. Keen to see how well it survives a few wash cycles and sweat sessions.

A
Anonymous

So comfy!!

A
Anonymous

So comfy.