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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Trunk in Organic Cotton Rib - Tar / Sand

Sale price$33.00 USD
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Made with GOTS Organic Cotton

OEKO-TEX® Certified

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Free Shipping Over $120

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Trunk in Organic Cotton Rib - Tar / Sand is a modern and minimal European cut designed for comfort, movement, and everyday wear. The body fabric is GOTS-certified organic cotton rib in Tar, with a small amount of elastane added to maintain shape and allow natural stretch. The rib knit provides flexibility without bulk, making the trunk breathable, soft, and stable throughout the day.

The leg openings are finished with cotton binding for a secure edge that stays in place without digging or riding up. This helps the trunk sit clean under clothing, holding comfortably without the need for constant adjustment. The waistband is made from rich cotton for support, finished with a minimal stone.kin logo quiet, refined, and deliberate.

Trunk in Organic Cotton Rib - Tar / Sand offers a mid-length profile that provides coverage with a smooth, tailored fit. It feels supportive without compression and soft without losing structure. The organic cotton fabric is naturally breathable and works well for warm climates, daily movement, and sensitive skin.

Tar is a deep, grounded charcoal tone, balanced with a Sand waistband for a neutral contrast that remains subtle and versatile.

No loud branding.

Just organic cotton, a clean silhouette, and a fit designed to be lived in.


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

  • 5 stars: 418 (87%)
  • 4 stars: 47 (10%)
  • 3 stars: 7 (1%)
  • 2 stars: 8 (2%)
  • 1 star: 2 (0%)
Some of the reviews shown are from related products the merchant grouped with this one.
P
P.

Amazing boxers! the size and fit are perfect, soft, great quality organic cotton, it doesn't get better than this!

A
Anonymous

Great fit and comfortable

E
Ethan

Fast Shipping and Super Comfy!

E
Ethan

Fast shipping and super comfy!

A
Anonymous

So comfortable, been looking for something since Hamilton and hare went bust. This fits the bill!

E
Eric

My new favorite briefs! They feel like a cozy sock. The waist doesn’t gather either. I love them!! Oh and they look great on!

A
Anonymous

Perfect 👌 feel and fit

m
michael

I love them! They are true to size, so I’m a 32” waist and bought the M. Also, I like the fact that the branding is small and not covering the entire waistband. Definitely will be buying more.

D
David

Really comfortable so far - very soft and not tight or restrictive

A
Anonymous

The fit is great and the feel so comfortable!

P
Pipka

The fabric is nice. Dry to the touch and breathable. Holds well with washing.
The trunk idea is a bit elusive to me. Leg hems roll up and make trunks briefs essentially. I'll try just briefs next time. I am not happy with this inside side seam on the waist band. It is rigid and prominent, digs into my skin and leaves a mark. Overall, quite satisfying wear. And, finally, a reasonable midhip fit. All other options on market are either full waist or low waist, both being ridiculous in my opinion.

A
Apollo

They are a perfect fit your product is great keep doing what you're doing.

A
Apollo

They are great

A
Anonymous

Not as comfortable as the brief but still nice.

A
Anonymous

So comfortable.

K
Klint

Nice and soft
Arrived within a week

A
Anonymous

Just purchased my first pair of Stone.Kin underwear.
Love the fit and fabric, will purchase again for sure.

A
Anonymous

Comfortable

A
Anonymous

My teen loves these. Very soft. Will order more when medium is back in stock.

A
Anonymous

Most comfy I’ve tried

S
Sam

Fit great, very chic, very comfortable

G
GEOFFREY

Fit perfectly and feel comfortable

R
Rob

Love the colour, fit and feel of these so much. New fave underwear!

R
Rob

Love the colour, fit and feel of these so much. New fave underwear!

R
Rob

Love the colour, fit and feel of these so much. New fave underwear!

R
Rob

Love the colour, fit and feel of these so much. New fave underwear!

m
matthew

Fantastic material and great fit

m
matthew

Fantasic material and fit

R
Rob

super comfy

R
Rob

True to size, super soft fabric and they wear well.

A
Anonymous

Excellent undies !!!

A
Anonymous

Comfortable