One Piece n°8 - Sunny Sea


The cut 
  • The first fixed strap jersey of the brand!
  • The asymmetrical single strap: so perfect for the beach or for the evening, worn with a skirt or jean shorts
  • The beautiful asymmetry of the neckline is suitable for A,B,C cups but also for D cups, as you can see on our Sigrid model
  • The swimsuit is lined with our soft recycled material
  • The bottom is classic, not indented

The fabric of this model shimmers slightly in the sunlight. It is a second skin fabric, not sculpting (sculpting fabrics are usually our matte fabrics).

Size advice
To choose your size of One-piece, refer to your size of Bottom. For example, if you are a size 36 in knickers, take a size S in One-piece. The straps are adjustable and will fit your top.
This swimming costume fits normally. If you are over 1m70 and not sure which size to choose, go up a size.

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

Our models
Sigrid is 1m65, is a D cup and wears an M (38 in Bottom)
Maeva is 1m75, is a B cup and wears an S (36 in Bottom)

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.

82% Recycled Polyamide. 18% Elastane.
Weight: 175gr.
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 only, never machine wash.

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

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