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 , USA & UK

  • 5 stars: 395 (87%)
  • 4 stars: 44 (10%)
  • 3 stars: 7 (2%)
  • 2 stars: 8 (2%)
  • 1 star: 2 (0%)
Some of the reviews shown are from related products the merchant grouped with this one.
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

M
Mads

They are just the softest most comtable underwear out there , just love them.

M
Michael

I’ve only worn Stone.kin or previously Stonemen for nearly 20 years. Wouldn’t dream of buying anything. Great designs great feel great fit.

A
Anonymous

Great for and good colour combination - fits true to size also

A
Anonymous

Feels great, fits well true to size

A
Anonymous

Feels great fits well true to size

A
A.S.

Always beautiful, always good quality. I buy these for my hubby - the last lot I purchased lasted seven years of continuous use!!

D
Devin

Love the colours and feel.

H
Hayden

Great feel and right size

H
Hayden

Great feel and right size

A
Andy

I bought one pair to try out for running as I've always been a loose fit boxers guy then I ordered four more as I enjoyed wearing them through out the day.

J
Jonah

The quality is great! I'm very happy with them

A
Anonymous

Great fabric, very comfortable and breathable

R
RG

Super comfy, is a more snug and slim style so if not your style suggest go up a size

N
Nick

Super comfortable material and construction, like the briefs, but with a little more coverage and legs that don’t ride up.

S
Shaun

Best material and customer service!

A
Anonymous

Most comfortable undies I’ve ever had!

D
David

Awesome feel!

H
Hughey

Great color, soft and comfy

H
Hughey

Very happy. So soft, they look nice and I’m glad to be wearing cotton

A
Anonymous

Very happy thx

N
Nick

Super comfortable and great fit

A
Anonymous

Comfortable

A
Anonymous

Comfortable