Free returns & exchanges

Les sirènes Navy bikini bottoms in recycled materials - ava bleu des sirènes

€20 €50 -60%
French size

Choose your size

Runs slightly small. If you're often between two sizes, take the larger one.

In the photos, Angela wears size 38

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, 2,993 reviews
This piece in detail +

Good to know

  • Ties on each hip: you adjust the tightness yourself, more or less snug to suit your body shape.
  • Fully lined: more coverage when wet, and nicer against your skin.
  • A fabric made mostly of Econyl® recycled nylon.

Material & feel

A smooth, supple nylon that sits close to the body without bulk and dries quickly between swims. The trade-off: 22% elastane. It's this generous share that lets the bottoms follow every move in the water then spring back into place, and suit more body shapes.

When to wear them?

From June to September, at the beach or by the pool. For swimming, diving or lazing in the sun.

Fit & size

The leg cut stays modest: your legs are free to swim or walk on the rocks, without revealing more than planned.

Runs slightly small. If you're often between two sizes, take the larger one.

In the photos, Angela wears size 38

Care guide

Hand washing is best. Dry your swimsuit in the open air, preferably in the shade.
Try a GuppyFriend Bag to protect synthetic fibres and reduce the amount of microfibres released into the washing water.
Material 78% econyl® (recycled nylon), 22% elastane
Country of manufacture Portugal
In-store availability +
Lyon 1er
Unavailable
36 38 40 42
Paris 10ème
Unavailable
36 38 40 42
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 ↗

Climate change

4.5 kg CO₂e

Water used

2,343 L

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

  • Vegan

    No animal-derived materials.

  • Made in Portugal

  • OEKO-TEX certified

    Certifies that no toxic substances are used in making the garment. The label →

  • Verified workshops

    We have checked the documents provided by Les sirènes 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

5 / 5
★★★★★ ★★★★★
1 verified reviews
5★ 1
4★ 0
3★ 0
2★ 0
1★ 0
FO
Farah O.
Verified purchase
July 2026
★★★★★ ★★★★★ Size 40 · Navy blue

Really pretty bikini bottoms, true to size and a lovely colour!

Translated from French

Les sirènes

// The brand

Les sirènes

Spécialiste du balnéaire éco-responsable, Les Sirènes utilise du nylon régénéré Econyl® issu de filets de pêche recyclés pour ses collections. La marque fabrique ses maillots de bain en France et en Italie, alliant maintien parfait et respect des écosystèmes marins.

Discover the brand
Free delivery on orders over €150 Free returns & exchanges
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Navy bikini bottoms in recycled materials - ava bleu des sirènes, Les sirènes, photo 1
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Navy bikini bottoms in recycled materials - ava bleu des sirènes, Les sirènes, photo 2
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Navy bikini bottoms in recycled materials - ava bleu des sirènes, Les sirènes, photo 3

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