Bottom n°5 - Collab' x Monday in the Sun

$28.00 USD $55.00


The cut 

  • It makes a flat stomach and the back is very sexy, without entering the buttocks
  • This Bottomswimming costume in a retro shape lengthens the legs
  • Its elastic edges allow a pleasant hold. 
  • Its lining makes it extremely soft.
  • Textured white is not transparent when wet

All our models have been tested by excellent swimmers and water sports enthusiasts in the south of France and during their travels abroad. We recommend using this Bottomfor surfing, swimming in the sea and stand-up paddling.  

Size advice
Take your usual Bottomunderwear size. For example, if you take your panties in size 38, choose size M. 

If you have any doubts or questions about the size, please contact us at

Our model
Here our model wear M


Fabric & Care

Posidonia's objective is to use a fabric that contributes to cleaning the oceans and the environment, but also very elegant and comfortable to free women from any constraint of movement. An eco-responsible jersey is also a sustainable jersey, which is why I have chosen the highest range of European fabric made up of waste such as fishing nets and plastic bottles.

78% Recycled Polyamide. 22% Elastane.
Weight: 190gr.
UPF 50 (sun protection).
Bi-directional stretch (marries muscles & movements: great sensation)
Label: OEKO-TEX Standard 100.
Italian fabrics.

🌞 UV protection SPF50


The sea and the salt do not alter your swimsuits if you rinse them with fresh water after each use. Let it dry flat or laid out on its own.

Hand wash your swimsuit. You can wash it in the washing machine at the end of your vacation, on a delicate cycle (max. 30 degrees), with a non-detergent detergent, without spinning or drying cycle.

The chlorine resistance index of our materials is very good. The colors, however, are more delicate.

Customer Reviews

Based on 3 reviews
Vive les tailles hautes !

Première fois que je choisis un bas de maillot taille haute, et je l'ai adopté direct !
Première fois également que j'investis dans un maillot de qualité et c'est vraiment sans regret. Je me sens libre de mes mouvements et très à l'aise.
Le petit + : les broderies, superbes.
Hâte de le tester en conditions réelles.

Christel Schies
Y a plus qu'à !

J'ai enfin trouvé un joli maillot de bain en tissu agréable à porter et écoresponsable. J'attends maintenant la chaleur et le soleil... Merci ma fille de m'avoir fait découvrir Posidonie❤️

Martine Kuhn
Parfait !

La taille est nickel, la matière est top et à l’usage tout tiens très bien ! Suis ravie !

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