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 - Mustard / 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 - Mustard / Sand is a modern European cut designed for a clean line and a comfortable, supportive fit. The body fabric is made from GOTS-certified organic melange rib in Mustard, with a small amount of elastane to allow natural movement and maintain shape. The rib structure adds subtle stretch and texture, keeping the fabric soft, breathable, and balanced for everyday wear.

The leg openings are finished with cotton binding to help the trunk stay in place without digging or riding up. This detail ensures a stable fit that moves with you rather than against you. The waistband is rich cotton, smooth and secure, holding comfortably without creating pressure. It’s finished with a minimal stone.kin logo understated, refined, and purposefully quiet.

Trunk in Organic Cotton Rib - Mustard / Sand offers a mid-length profile that provides coverage without bulk. The silhouette is tailored but relaxed enough for daily wear supportive where needed, soft everywhere else. The organic cotton helps regulate temperature and reduces irritation, making it suitable for all day comfort, warm climates, or sensitive skin.

The Mustard melange body pairs with a Sand waistband for a warm, grounded tonal contrast subtle, natural, and easy to integrate into your rotation.

No synthetic. No toxins.

No excessive branding.

Just thoughtful cut, dependable fit, and organic cotton comfort.

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