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.

Skip to content

Cart

Trunk in Organic Cotton Rib - Pandanus

Sale price$35.00 AUD
Select Your Size:
Delivery Frequency

Your next order

Recurring Product Image

Eligible for Subscription

Recurring Product Image

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

Secure Checkout

Easy Returns

A modern European cut, made with super soft organic cotton with a hint of elastane and a cotton leg binding, elevated with a rich cotton waistband and a minimal stone.kin logo. 

Body fabric is GOTS Organic melange rib in Pandanus colour, with matching waistband.


  • 5 stars: 367 (86%)
  • 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.
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.

M
Michael

Ordered one Trunk and one Boxer, both in size S. Instead, I only received the Trunk in a size M, and the Boxer was completely missing. I contacted customer service twice, once via email and once through their website contact form, and waited a full week with zero response. Just complete silence. I’m extremely disappointed, as this was my second order and I was planning on buying more because I liked the product. But given this terrible service, it will be my last. Never again!

M
Michael

Ordered one Trunk and one Boxer, both in size S. Instead, I only received the Trunk in a size M, and the Boxer was completely missing. I contacted customer service twice, once via email and once through their website contact form, and waited a full week with zero response. Just complete silence. I’m extremely disappointed, as this was my second order and I was planning on buying more because I liked the product. But given this terrible service, it will be my last. Never again!

A
Anonymous

So comfortable - the best undies!

T
Thomas

So comfy and stylish!

T
Thomas

So comfy and stylish!

T
Thomas

So comfy and stylish!

J
Jack

Elite Organic Cotton, super comfy!

F
Francois

Boyfriend is hot amd comfortable in them!

F
Francois

Love them, the fit is on point!! Wish there were more coulours