Free returns & exchanges

Thinking Mu Straight-fit pleated trousers in organic cotton | black "black rina pants"

€119
French size

Choose your size

We recommend you take your usual size.

In the photos, Marine is 173 cm tall and wears size 34

Size guide
Size equivalents
US size 24 25 26 27 28 29 30 31 32 33 34
FR size 34 34-36 36 36-38 38 38-40 40 40-42 42 42-44 44
Size XXS XS-S S S-M M M-L L L-XL XL XL-XXL XXL

Free returns & exchanges · 30 days to send it back to us

At your door Thursday 12/11 · free delivery on orders over €150 Free returns & exchanges · 30 days to send it back to us Loyalty programme · 5% of the amount paid added to your credit Excellent on Trustpilot · 4.8/5, 2,991 reviews
This piece in detail +

Good to know

  • The waist follows your movements at the back: you stay comfortable sitting all day, and the front keeps a clean line.
  • 100% organic cotton, nothing added.
  • The smart look of tailored trousers, in a canvas you can machine wash.

Fabric & feel

A dense, opaque organic cotton canvas that falls straight without clinging. A little stiff at first, it adapts to your body the more you wear it. It can take a hot iron: the pleats quickly get their crispness back.

When to wear it?

From March to June, then from September to November, when cotton canvas is enough to keep your legs warm. For long days sitting down, meetings and dinners where you want to look smart without feeling squeezed.

Fit & size

The pleats give room at the hips: you can sit, climb stairs and cross your legs without the fabric pulling.

We recommend you take your usual size.

In the photos, Marine is 173 cm tall and wears size 34

Care guide

Machine wash at 30°C inside out. Iron on high heat (200°C)
Material 100% organic cotton
Country of manufacture India
Fit Straight
Rise Mid-rise
Stretch No stretch
Length Ankle
Elasticated waist No
Pockets Yes
Fastening Zip and buttons
Fabric drape Structured
In-store availability +
Lyon 1er
In stock
34 36 38 40 42 44
Paris 10ème
Unavailable
34 36 38 40 42 44
Environmental cost +

Calculated using the official French government method (Ecobalyse), across the entire life cycle. The lower the score, the lower the impact.

Official French government logo · Ecobalyse v7 regulatory method.

See calculation details ↗

This garment costs the environment 27% less than a conventional equivalent.

The conventional equivalent is the same garment made from non-organic, non-recycled materials in Asia, as is standard in the industry.

Climate change

6.6 kg CO₂e

4% less

Water used

1,062 L

89% less

Regulatory environmental labelling · calculated with Ecobalyse.

Delivery & returns +

Delivery costs

Free on orders over €150 in France, Belgium, Monaco, Germany, the Netherlands and Austria. Below that, €3 to a pickup point or €5 for home delivery. See other countries.

Delivery time

Estimated delivery: Thursday 12/11. We do our best to meet this date, but it may still change slightly. Sold and shipped by WeDressFair.

Returns & exchanges

Free returns & exchanges

You have 30 days from receipt to try on your items at home, at your own pace.

Not right for you?

Returns are free: we refund you to your payment method as soon as your parcel has been processed.

Wrong size?

Request another size from your account: the exchange is free, including the return and the new delivery.

How does it work?

In your account, click "Return or exchange", then download your label: there's nothing to pay.

How to make an exchange

Loyalty programme

Every order placed with your account earns you 5% of the amount paid in credit. It's added automatically at the end of the return period, then applied on the payment page of your next order. It never expires. Find out more.

Our commitments for this piece

  • 100% sustainable materials

    100% organic cotton.

  • Vegan

    No animal-derived materials.

  • Verified workshops

    We have checked the documents provided by Thinking Mu about its production workshops and the materials used, against the criteria in our charter.

Our charter & our method

Our method

01

We seek out

We look for brands whose approach actually holds up, not the ones with the best marketing.

02

We analyse

We ask for workshop names, compositions and labels, along with the proof to back them up.

03

We validate

Without proof, a brand doesn't make it into our catalogue. It's the one rule that's non-negotiable.

Our selection charter · 3 pillars

01

Respect for people

  • All brands share the names of their partner workshops with us.
  • All of them commit to respecting the fundamental principles of the International Labour Organization.
  • When they manufacture in high-risk countries, we ask for additional guarantees and labels.
02

Care for the planet

  • 100% of the clothes we select are made from at least 90% organic, vegan, recycled or natural materials.
  • All brands give us proof, with labels and certifications: GOTS, OCS, Oeko-Tex, Bluesign…
03

Integrity and values

  • At least 75% of collections must be eco-friendly.
  • All of them commit to always doing better, never worse just to produce more.
View the full charter ↗

What our customers say

4.7 / 5
★★★★★ ★★★★★
14 verified reviews
5★ 11
4★ 2
3★ 1
2★ 0
1★ 0

Review summarybased on 14 reviews

These trousers are a hit with everyone for their exceptional comfort and impeccable fit, both smart and casual. Customers highlight the high quality of the fabric and its perfect drape. A versatile must-have, although the fabric can attract dust.

Translated from French

Automatic summary of verified reviews. May contain inaccuracies.

AM
Ambre M.
Verified purchase
March 2026
★★★★★ ★★★★★ Size 36 · Black

Really high quality trousers (great fabric), look great on. True to size

Translated from French

CD
Camille D.
Verified purchase
November 2025
★★★★★ ★★★★★ Size 38 · Black

Gorgeous trousers, ultra comfortable. The only downside: the fabric picks up every bit of dust ... :)

Translated from French

AM
Amandine M.
Verified purchase
October 2025
★★★★★ ★★★★★ Size 38 · Black

Gorgeous fit and good quality fabric

Translated from French

VL
Valentin L.
Verified purchase
October 2025
★★★★★ ★★★★★ Size 36 · Black

Very elegant trousers, comfortable to wear

Translated from French

LB
Laurine B.
Verified purchase
October 2025
★★★★★ ★★★★★ Size 36 · Black

Comfortable trousers, nice fit. The fabric is nice, only downside: it picks up hairs.

Translated from French

MT
Marie T.
Verified purchase
October 2025
★★★★★ ★★★★★ Size 36 · Black

Really comfortable trousers

Translated from French

14 verified reviews

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Thinking Mu

// The brand

Thinking Mu

A pioneer of circular fashion, Thinking Mu turns innovative and recycled fibres into colourful, committed pieces. It guarantees full transparency and a minimal environmental footprint for every garment it makes.

Discover the brand

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Straight-fit pleated trousers in organic cotton | black "black rina pants", Thinking Mu, photo 1
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Straight-fit pleated trousers in organic cotton | black "black rina pants", Thinking Mu, photo 2
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Straight-fit pleated trousers in organic cotton | black "black rina pants", Thinking Mu, photo 3
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Straight-fit pleated trousers in organic cotton | black "black rina pants", Thinking Mu, photo 4
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Straight-fit pleated trousers in organic cotton | black "black rina pants", Thinking Mu, photo 5
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Straight-fit pleated trousers in organic cotton | black "black rina pants", Thinking Mu, photo 6

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